Authors Note: Just to let you know, this is going to be a VERY interesting chapter.

Sirius spun around and swung his fist instinctively. But the person he was swinging at had other ideas. She swung her arm out and hit his, and then she decked him on the nose. Again. Sirius grabbed his nose and looked at his friend.

"Hell of a greeting, Buffy." Sirius said to the young woman in front of him.

"Yeah, well you swung the first hit. What's the matter? Can stand not to hit on me?" Buffy shrugged then smiled as James, Peter, and Remus came over and hugged her.

"Ha bloody ha, very funny." Sirius smiled at her little play on words. That was Buffy. Never one to let a comment she could say something on slip by. She was a strong one with a dry wit. Not to mention she was single.

*Well, I think she is.No! Sirius, do NOT go there! * Sirius thought to himself(no duh!). James then noticed Sirius was holding his nose and started to laugh and asked,

"She hit you AGAIN?!" James, Peter, and Remus all burst out laughing and Sirius glared as Buffy started laughing, too.

"Well, at least this time you didn't make it bleed." Remus (this is STILL weird) said to Buffy, making her and James start laughing even harder, and James was doubled over from laughing so hard.

"Well, I could've if I wanted to.but.heh heh (that was a laugh) I didn't feel like getting blood al over.heh heh. me." Buffy gasped between laughing. James was now howling with laughter, and was rolling on the ground clutching his ribs, and gasped,

"She.heh heh heh heh.hit.you.AGAIN! Heh heh heh heh!" James was pounding his fist on the ground and Buffy started laughing even harder. Buffy and James face were red and Remus and Peter were laughing. Sirius was scowling at his friends, and eventually started laughing when Buffy tripped over James and landed on James' stomach, on his ribs that were already throbbing from him laughing so much, and James said,

"OW!" Buffy rolled off him and said,

"Sorry!" Sirius, Remus, and Peter were the ones who were howling with laughter now, and Sirius started laughing harder at the scowl on both Buffy and James' face. Sirius said,

"What's the matter, Buffy? Can't take it when it's about you?" Buffy scowled, then smiled when Sirius howled as she slammed her fist into his stomach, and nodded, satisfied, turned around, and rolled her trolley towards the train. James and Remus shook their heads and followed, though they didn't know where on the train she'd gone.

"Well, that's what, three times she's hit you now?" Peter laughed, the took one look at then murderous look on Sirius' face, shrieked, and ran after Buffy, James, and Remus.

Sirius rolled his eyes at how much of a baby Peter was, and, wondering how he ever came to be friends with Peter, walked calmly after his friends.

After catching up with his three guys friends, they started to look for Buffy.

They'd been searching for ten minutes until they found the compartment where she was lying flat on her back, eyes closed and tapping her foot to the rhythm that was blasting through her muggle headset. Sirius remembered that song she was listening to. Over the summer after third year, they had gone over to Buffy's house for a few days and she had told them it was one of her many favorite songs...

I love rocking roll,
So put another dime in the jukebox baby,
I love rocking roll,
So come on take some time and dance with me

It sounded like the singer Buffy had called Brittany Spears, well, that was what Sirius thought she had called her. Sirius smiled wickedly, and said to James,

"Do you have your Invisibility Cloak on you?"

"Yeah, in my trunk, why?"

"I'm gonna scare the crap out of her." Sirius smirked. James smirked back at him, went to his trunk, and pulled out the cloak. He handed it to Sirius, who put it one, went to Buffys trunk, which was ten feet away from her, and pulled out her journal. He found what he was looking for, closed it, and put it back in and shut her trunk. He then walked over to her, and stood, invisible, above her. By now, the song she called "Bring Me To Life", one of her other favorite songs...

How can you see into my eyes like open doors
Leading you down into my core where I've become so numb
Without a soul
My spirit's sleeping somewhere cold,

Until you find it there and lead it back home...

Standing over Buffy, Sirius reached down and pulled her headphones off, but the music still blasted, louder now. Buffy opened her eyes and looked around, but the room was empty, as James, Remus, and Peter had gone outside of the compartment unnoticed, but were watching through the window in the compartment.

She shrugged and reached to the floor, as she thought her headphones had just fallen off, but was shocked to see them floating three feet above her head. She looked scared and jumped up. She looked wildly around, looking for someone.

"James Potter, if this is some kind of sick joke, knock it off. You know very well that I'm afraid of ghosts." Buffy said, her voice shaking.

James, outside the compartment, started laughing, as he did know, and also laughing at the fact that she thought it was him. He laughed for ten seconds, before and elbow from Remus making it's way into his ribs made him stop and say,

"OW!"

Remus put a finger up to his lips, signaling James to be quite, but it was too late, Buffy had already heard him.

Buffy started to slowly started walking towards the compartment door, and was reaching for the door handle when all of a sudden she jumped almost a foot in the air and screamed.

Sirius started laughing, and pulled off the cloak, but stopped laughing when he saw she had tears in her eyes.

"Sirius, you asshole!" She screamed, slapping him on the shoulder, and then turning and grabbing her things.

"Where are you going?" Sirius asked.

"I'm going to find Lily." Buffy answered, not looking at him. She grabbed her things, and walked out of the compartment, her headphones blasting...

I wanna be bad,
You make that feel so good,
I've got things on my mind,
I never thought I would,
I, I wanna be bad

"Buffy! Come on, come back! I'm sorry!" Sirius shouted after her, but it was no use, she had already disappeared the hallway. James, Remus, and Peter came back in the compartment, all looking at Sirius.

"Nice going, man." James said.

"Yeah, nice going. Now we're not gonna see her for the rest of the ride! Cause, you know as well as I do that if she doesn't wanna be found, she won't be." Remus said.

"Oh, come off it, will you? She went to Lily's compartment, and I'm gonna go find her." Sirius said, rolling his eyes. But when he started to turn, James grabbed his arm and said,

"Do you know WHY she's scared of ghosts?"

"No, why?"

"Well, I thought she would've told you, but in her second year, her younger sister-" James started to explain, but was cut off by Sirius, Remus, and Peter, Sirius the loudest, exclaiming,

"She has a younger sister!?"

"HAD. She HAD a younger sister." James corrected them.

"Well, what happened to her?" Sirius asked, curious.

"Sit down." James commanded, and they obeyed. When they did, James took a deep breath and told them the story...

"Well, I was wandering around a muggle town over Easter Break during second year at night, cause I was bored and all, and I heard a crashing and screaming, and then ten minutes later I was still wandering around, trying to find where the noise had come from, when I saw Buffy leaning on a street, bawling her eyes out, head in her hands. I walked over and said her name, and she looked up. She looked horrible, I mean, she didn't, she still doesn't, wear a lot of make-up, only that black crap under her eyes, eyeliner I think, but she didn't have anything on, and her lips were cracked, and her eyes were bloodshot. She took one look at me and then collapsed, and started bawling on my shoulder. After a little she calmed down, and told me what happened. Her sister, Abby, was ten and Buffy said she and Abby had never fought once, but sometimes Abby annoyed the hell out of Buffy, but Buffy sill loved her anyway, and they were more like friends than sisters. So then, she told me that Abby was sitting in her room, excited cause she had just gotten her Hogwarts letter, and was going to come to Hogwarts during our third year. So Abby was all excited, and she fell asleep that night. So Buffy is sitting in her bed, reading, when all of a sudden her sister screamed. Buffy jumped up, and ran to her room, and saw her sister being thrown around the room, screaming "Buffy!". But the thing is, there was no one there. So Buffy knew it was a poltergeist, and she reached into her pocket for her wand, but then panicked, as we're not allowed to use magic outside of school, and she ran over and tried to pull Abby away from the bastard, but then the thing knocked her to the other side of the room. She hit her head, blacked out for a few seconds; then came to and rubbed her head. When she looked back, well, you know how poltergeists can pick up solid objects? Well, this one was, like, evil or something, and when she looked up, it was stabbing her sister with a long kitchen knife, and it had already cut her throat and wrists, so there was blood all over, and Buffy screamed "ABBY!" but her sister was already dead, and the thing just kept cutting her all over. So then Buffy started throwing things at it, and screaming "GET THE HELL OUT OF MY HOUSE!" So then, she just ran out of the house; her parents were at a hotel, so she was babysitting Abby, and then I bumped into her. And when I took her back home, the ghost had put Abby back in her bed, and wrote on the wall 'Happy Birthday Buffy" in Abby's blood, as Buffys birthday was only a few days before, and they found out that that ghost just killed people for no reason, and killed someone's loved one for their birthday." James finished the story to stunned silence.

"So, Buffy saw her sister get murdered by a ghost?" Sirius said, stunned and feeling like what Buffy had called him, not to mention feeling horrible, because he had probably reminded her of her sister.

"That's horrible!" Peter said.

"So, her sister was murdered by a ghost and Sirius just scared the shit out of Buffy by that?" Remus asked.

"Yup." James said simply. Sirius groaned, and shrunk down in his seat, holding his head.

"Oh god, I really am an asshole." Sirius groaned.

"Yup." Remus, James, and Peter agreed. Sirius looked at them like 'you weren't supposed to agree with me!' and said,

"I'm gonna go find her." And with that, he walked away.

Sirius started walking around, looking in compartments, and then shutting the door when Buffy wasn't in there.

Finally, after a half and hour of looking, he found her, sitting in between Raven and Lily, pouting with her arms crossed, and not looking up when he walked in.

Lily, laughing, looked up when he walked in, and stopped, and said,

"What do you want?"

"Why do you care?" Sirius answered.

"Go away, Sirius." Buffy said, still not looking at him.

"Come on, Buffy. I said I'm sorry. I didn't know about your sister." Sirius said, his eyes pleading for forgiveness, but then regretted saying anything about Abby.

"Her sister? Buffy doesn't have a sister!" Raven said.

Sirius mentioning Abby got Buffy's and Lily's attention, as both of their heads snapped up and they looked him dead in the eye, Buffys eyes filled with sadness and anger that anyone dare mention Abby in her presence. When Buffy spoke, her voice was shaking, as though she were forcing herself to remain calm,

"How the hell do you know about Abby?" She asked him.

"How do you know about Abby?" Lily said after Buffy.

"James." Sirius said, but then realized he had gotten his best friend in a lot of trouble, as Buffy and Lily both rose from their seats in one graceful movement, and Buffy walked out of the compartment looking madder then anyone had ever seen her, looking about to murder James, and shouted,

"JAMES POTTER!" Buffy stormed down the hall, Lily not far behind her.

Sirius looked at the girls in the compartment, all looking at him, gave them a smile that said 'I just got my best friend into a lot of trouble', and walked after his other fuming best friend and Lily.

Sirius was walking towards their compartment when he heard a SLAM! a BAM!, and a shout, and started sprinting, as he knew what Buffy could do when she was pissed, and that wasn't a strong enough word to describe the state she was in now.

Sirius walked into the compartment in time the see Buffy standing still, shaking with anger, her wand pointing in the direction of James, who was now floating in the air.

"SO HOW MANY PEOPLE DID YOU TELL, JAMES? HUH? DON'T YOU THINK IF I WANTED THEM TO KNOW I WOULD'VE TOLD THEM???" Buffy shouted, slamming James around them compartment with her wand all the while.

"BUFFY! CALM DOWN!" Sirius bellowed, but soon realized that was a BIG mistake, as she turned on him.

"CALM DOWN? CALM DOWN!? YOU EXPECT ME TO CALM DOWN AFTER HE TOLD YOU SOMETHING I SPESIFICALLY ASKED HIM NOT TO TELL YOU!? OR TELL ANYONE FOR THAT MATTER! LILY DIDN'T EVEN KNOW UNTIL LAST YEAR! MY SISTER IS DEAD AND HE TOLD YOU AND I TOLD HIM NOT TO TELL ANYONE OR HE'D REGRET IT, AND YOU'RE ASKING ME TO CALM DOWN?!" Buffy roared at Sirius, turning out her anger on him, and shoving her wand in her jean pocket.

"Yes, I am." Sirius said calmly, knowing she wouldn't do anything to him if he did this the right way, but then realized he wasn't as Buffys fist rammed into his gut, and then his face as she vented out her anger.

"MY GOD, YOU MUST BE STUPIDER THAN I THOUGHT! YOU THINK I'M GONNA LET HIM OFF THE HOOK THIS TIME? HE'LL BE LUCKY IF HE GETS OFF WITH ONLY A FEW SCARS AFTER I'M THROUGH WITH HIM!" Buffy screamed, obviously not joking. "WELL, IF THAT'S WHAT YOU THOGUHT, YOU'RE HORRIBLY MISTAKEN!" Buffy was obviously maddened almost to the point where she didn't care what she was doing anymore, so when she pulled out her wand, Sirius wasn't surprised when everyone, including Lily, back away. Well, all except Sirius, who moved forward and said,

"Put the wand down, Buffy."

"No." Buffy said, now seething with anger.

* Oh shit, she's gone mad!* Sirius thought.

"Buffy, you know you don't want to hurt anyone."

"DON'T I?! MY SISTER WAS MURDERED IN FRONT OF ME, BY SOMEONE I COULDN'T SEE, AND I COULDN'T DO ANYTHING ABOUT IT! DO YOU KNOW HOW LONG I'VE BEEN TRYING TO FIND THAT THING AND KILL IT?! WELL, GUESS WHAT, SIRIUS? I DID! I FINALLY GOT THE THING AND HE WAS INVISIBLE WHEN I DID IT, SO WHEN I CHUCKED A KNIFE AT HIM, I DIDN'T SEE HIM BLEED! DO YOU KNOW HOW MUCH I WANTED TO SEE HIM BLEED TO DEATH LIKE MY SISTER, MY LITTLE INNOCENT SISTER, DID? LIKE HE MADE HER? WELL, I DIDN'T GET TO, SO KNOW I WANT TO SEE SOMEONE BLEED! I WANNA SEE SOMEONE PAY!" Buffy roared at Sirius so load, that half the train was now watching the scene through the open door, including some of the teachers. "ANYONE WANNA COME NEAR ME? CAUSE I SWEAR IF YOU DO I'LL MAKE YOU BLEED! THINK I'M KIDDING? TRY ME!" Buffy yelled, daring anyone to come any closer to her.

Sirius stepped forward, toward her, and said,

"Buffy, you won't and you know it."

"WON'T I, SIRIUS? WELL, SAY THAT NOW!" Buffy screamed, slamming her fist to his face where her nails scratched his cheek, so there were now three scratches on his cheek, dripping with blood. Sirius' head turned sideways as she hit him, and when he looked back at her, Buffy was horrified that she had made him bleed, but then her face turned cold.

"Anyone else?" She said, looking as if she hoped terribly that someone else was stupid enough to say yes. She looked around, and when her eyes fell on Sirius, still in the same spot two feet away from her, she looked horrified and there was something else one her face when her eyes fell on a knife by her foot that almost scared Sirius to death. Need. She reached down slowly and picked up the knife, backing away when Sirius stepped forward.

"Buffy, put the knife down. Put the knife down, Buffy." Sirius said, terrified about what he knew she was going to do. Buffy walked backwards, until her back was three feet away from the wall, shaking her head.

"I have to Sirius. I'm sorry. I can't take this anymore, it's just too much. Knowing that if I'd moved quicker I'd have been able to save her, I just can't stand it. Why should I live, and Abby shouldn't? What did I do that she didn't?" Buffy said slowly, still holding the knife.

"Buffy, you don't want to do this. You're a good person, and you couldn't of saved her." Sirius said pleadingly.

"HOW THE HELL WOULD YOU KNOW? WERE YOU THERE? WERE YOU THERE WHEN I SAW A GHOST MURDER MY LITTLE SISTER? DID YOU SEE HER BLOOD SPILL ONTO HER BED? ONTO THE FLOOR? WERE YOU THERE WHEN I LOST MY BEST FRIEND?" Buffy screamed, then said calmly, "No, Sirius, you weren't. And you wouldn't understand why I'm going to do this."

"No, I don't. But I know how I'm going to feel if you do this. I'm going to lose one of my best friends." Sirius said.

"So then you understand why I have to do this, Sirius. Just please, please let me see my sister again." Buffy said, begging him as if it were up to him.

"I can't let you do this, Buffy. I just can't. You can't do this." Sirius said.

"You aren't someone to tell me what I can and cannot do, Sirius." Buffy said, "I just want to see my sister again. Just, please, let me see my sister again." Buffy said.

She was looking at him as thought that was the only thing that mattered to her, and she looked so fragile and lost that it broke his heart and scared him, as he was used to seeing her so strong and defiant and beautiful.

"I'm sorry, Sirius. I just have to." Buffy told him, whimpering and backing up as her walked towards her, backing her up into the wall. Sirius now stood in front of her, staring into her mad and wild eyes, which were pleading with him, but looking sad all the while, and he gently grabbed her wrist with the knife in it, and said softly,

"No, you don't. Buffy, I realize that it must've devastated you to lose your sister, especially when she was so young, but killing yourself isn't going to bring her back, okay? It'll only make your parents more sad to lose there other daughter, and you don't want them to go through that again, do you?" Buffy looked away from him at this, but he continued, "Buffy, you're parents will miss you, yes. And so will Hogwarts, but you have lots of thing here that you shouldn't give up. You have friends, you have your parents, you don't have Abby, but you have something just as good."

At this, Buffy looked up at him, and he stared into her beautiful brown eyes and whispered in a small voice,

"And what's that?" Sirius smiled softly at her.

"You've got me." At his words, Buffy collapsed, and started sobbing. Sirius caught her, and he held her, listening to her spilling out her heart on his shoulder,

"10, she was only 10, Sirius! Why'd she have to die!?" She stopped talking then, just sobbing on his shoulder, and he led her over to a seat and sat down, her on his lap, still bawling, and Sirius watched, smoothing her hair down, as it had come out of it's bun when she had been screaming at him, with one hand, the other around her waist, and staring out the door while James, Remus, and Lily shooed everyone away, then sat down. Sirius rocked Buffy back in forth, effectively calming her down so she stopped sobbing, and silent tears rolled down her cheeks. Sirius looked down at her and was surprised to see red meet his gaze. He picked up a strand of her four-inches-below-the-shoulder-length hair and pulled back slightly from her, and said softly,

"Buffy, what happened to your hair? It's red!" Well, it was true. Her hair WAS read, opposed to its natural light brown with blonde highlights, so now it looked red with strawberry-blonde highlights.

Buffy pulled back a little, wiped the tears from her eyes, and picked up a strand of her hair, and smiled slightly,

"You just noticed that?"

"Yeah, how'd it get like that?" Sirius said, smiling at the fact that she was smiling.

"I dyed it, dummy!" Buffy said, smiling widely.

"Hey, you okay?" James asked her. Buffy turned and smiled at him.

"Yeah, I'm fine now." She said, moving off of Sirius' lap, disappointing Sirius and herself slightly.

"It's just, I miss Abby. I'll be fine, now that I got that all out." She said, smiling.

Ten minutes later, Buffy was asleep, her head resting in Sirius' shoulder, while Lily had also fallen asleep, her head now on James' shoulder, and he could tell James' was enjoying every minute of it. All of a sudden, Sirius heard Remus say,

"Sirius, wake up."

Sirius turned to Remus and said,

"Did you say something, Moony?" Remus looked up from his book and shook his head.

"Wake up Sirius, you're dreaming." Remus said again.

Sirius awoke with a start. He saw Remus standing in front of him, shaking is shoulder. After Buffy had left for Lily, he had fallen asleep, but it didn't feel like he was dreaming. All of a sudden, Sirius jumped up, and walked out, ignoring the few "where are you going?"s he heard.

He found Lily's compartment, walked in, walked straight up to Buffy, and said,

"Did you have a sister named Abby?" Buffys face went blank for a second, but was then replaced by cold fury.

"How the hell do you know about Abby?" Buffy said, looking him dead in the eyes.

"How do you know about Abby?" Lily said. Sirius opened his mouth to tell her about the dream, but Buffy and Lily decided they already knew, and Buffy and Lily got up, same as they had in the dream, and Buffy stormed out, yelling

"JAMES POTTER!"

Lily, not to far behind Buffy, followed her, as did Sirius.

*Here we go again... * Sirius thought as he heard a SLAM!