By the time Harry woke up the next morning, Tilly and Neville were getting ready to go to breakfast. Diana made her way over to him and gave him a couple of pokes to fully wake him up.

"Five more minutes," Harry mumbled.

"Never!" Diana said overdramatically while ripping the blanket off Harry.

Harry begrudgingly got up from the couch and looked around the room.

"What's this place?"

"Just one of the many secret rooms throughout his castle."

Eventually, everyone started heading down to the Great Hall. On the way down Harry filled Diana in on the package, the vault, everything that had happened yesterday. Tilly seemed to be trying really hard not to listen.

"Do you think they're trying to hide some kind of weapon?" Diana asked Harry.

"But why hide it in a school?" Harry said.

"It's anyone's guess what Dumbeldore was thinking when he made that decision."

As the four of them walked into the Hall Neville said a quick goodbye, and ran to get something to eat. As he ran away, Diana spotted the shocked face of Malfoy. She nudged Harry.

"I don't think he was expecting you to still be here," Diana said, and Harry let out a snigger.

"By the way, Tilly, how did you know about the duel with Malfoy?" Harry asked.

"I was up pretty late last night, and Malfoy was bragging about it to his friends in the common-room."

"Why were you up so late?"

"I don't wanna talk about it," she said, and then turned to Diana. "I'll meet up with you later. I have to go get something."

Diana nodded her head, and Tilly left. She looked over to Harry, who had a disappointed look on his face.

"What's the matter?"

"She's acting differently," Harry said while looking at his feet.

"What do you mean?" Diana didn't think that Harry knew Tilly. The only times she had seen the two of them together was during meals and last night.

Harry looked up.

"I met Tilly before school started." Harry looked up. "I think she may be treating me differently because she found out I was Harry Potter."

Diana felt a rush of sympathy for the kid. She knew why Tilly may have been so cautious around Harry, but it wasn't her place to tell him why.

"Listen, it's not right for me to tell you why she's being distant with you, but it's definitely not because you're famous."

Harry still looked disappointed.

"I'll tell you what? I'll talk to her today. You just focus on Quidditch for now." said Diana. "I know it's an annoying thing to hear that I won't tell you why, but it's not for me to say anything behind her back. All I'll say is that she's just been hurt before and doesn't want to get hurt again."

That seemed to be a bit better for Harry. The two of them walked over to one of the tables and started eating.

Later on, Diana finally caught up with Tilly.

"Tills, can we talk for a minute."

"Sure, what's up."

"Why are you being distant with Harry just because he's a Gryffindor?"

Tilly refused to meet Diana's eyes.

"I don't want another broken friendship."

"Fiona was the worst tho."

"She wasn't always the worst," Tilly said. "You know what it's like! That stupid house cup changes people!"

"I know that what Fiona did really hurt, Tilly, but do you really think it's right to treat Harry a certain way basically because of what team he's been randomly put in."

Tilly looks conflicted. It was likely that she already thought of most of this in her own head, didn't want to admit it out of fear.

"I …. I just don't want to be hurt again."

"You trust me, don't you?" Diana asked.

"Of course I do," Tilly shouted.

"Then please give Harry a chance," Diana said. "Give him the chance to be his own person."

"I'll try," Tilly said.

The next week went by in a blur. Diana found that her mind kept drifting back to that giant dog and the trapdoor. Lucky when the morning mail started flying in something arrived to take Diana mine off the third floor for a bit.

It was a huge package that was being carried by six different owls. They dropped it right in front of Harry along with a letter.

Harry ripped it open, and after reading it showed it to Diana.

DO NOT OPEN THE PARCEL AT THE TABLE.

It contains your new Nimbus Two Thousand, but I don't want everybody knowing you've got a broomstick or they'll all want one. Oliver Wood will meet you tonight on the Quidditch field at seven o'clock for your first training session.

Professor McGonagall

"Oh my god," Diana said in awe as she looked over the package. "I don't think I've seen a broom like this in person."

The two of them rushed out of the hall as fast as they could. With Harry still holding the letter and Diana carrying the package over her shoulder.

They started racing up the stairs, and when speeding around a corner, Diana didn't see Malfoy and his friends. As a result, she accidentally slammed into Crabbe and fell to the floor.

Malfoy picked up the package from the floor and felt it.

"Are you made out of bricks or something?" Diana said to Crabbe.

"This is a broomstick," Malfoy said, throwing it back to Harry with an enraged look on his face.

"You'll be in for it this time, Potter, first years aren't allowed." Harry ignored Malfoy and moved to help Diana off the ground.

Professor Flitwick suddenly appeared next to them.

"Not fighting, I hope?" he squeaked.

"No Sir, I was just being silly and accidentally ran into Crabbe," Diana said while brushing the dust off her clothes.

"Potter's been sent a broomstick, Professor,"

said, Malfoy quickly.

"Yes, yes, that's right," said Professor Flitwick, smiling at Harry.

"Professor McGonagall told me all about the special circumstances, Potter. And what model is it?"

"A Nimbus Two Thousand, Sir." Harry has proudly. The look on Malfoy's face was priceless.

"And it's really thanks to Malfoy here that I've got it," Harry said sarcastically. Diana was trying not to burst out laughing.

Malfoy let out a huff and left.

"Well, it's true."

The two of them eventually found a place safe enough to open the package. The broom itself was probably the best-looking one Diana had ever seen.

Diana had to admit that when she and Harry realised that they had to go to class, she was a little heartbroken. She was having fun discussing Quidditch, and it felt like it had ended too soon.

For the next couple of weeks, Diana switched between hanging out with Harry and Tilly to spending time with Fred and George.

Fred and George would make jokes about Diana having abandoned them for 'the new all-star seeker', but Diana was quick to tell them how that wasn't the case.

On Halloween morning, Diana jumped out of bed. Halloween was one of the few days of the school year that students were allowed to dress casually (within reason).

Most of the teachers hated it, but it was better than letting the students walk around in costumes all day.

Diana was in potions class when everything started going south. She was close to finishing her potion for the day only to have her partner get a bit overeager and dump in the last ingredient when it wasn't ready.

The caldron ended up overflowing and getting all over their uniforms. Snape was quick to give with a failing grade for that lesson and sent them off to change.

"I'm really sorry." The boy said.

"Don't worry about it." Said Diana. "Now you know what not to do next time and plus we got to leave class early."

After classes had ended for the day, Diana went looking for Tilly. When Diana couldn't find her, she started to get a bit worried.

"Have you guys seen Tilly today?" Diana asked Harry and Ron.

"Haven't seen her since breakfast."

"I saw her." A girl named Parvati said from across the table.

"Whereabouts?"

"She was in the 1st-floor bathroom," Parvati said. "She said she wanted to be alone for a while."

Diana let out a sigh.

"Is she okay?" Harry asked her.

"She'll be okay," Diana said. "Just needs a bit of time to herself."

Diana knew better than to try and comfort Tilly at a time like this. When Tilly said she wanted to be alone, she MEANT it.

She tried not to worry too much during dinner. While she had initially been annoyed about goofy costumes not being allowed on Halloween, the yearly feast somewhat made up for it.

Diana loved the aesthetic of Halloween. All the spooky purple and orange decorations. Being able to dress up in silly outfits. She loved it to bits.

It was ruined by Professor Quirrell running into the hall like a crazy chicken. He sprinted all the way up to the head table and then gasped out.

"Troll! In the dungeons! Thought you ought to know." Diana's mind immediately went to Tilly. Was she still in the bathroom? Did she go back to her dorm?

Quirrell then proceeded to pass out onto the floor, and everyone immediately started panicking.

Dumbledore started instructing all the prefects to take everyone back to the dorms (except for the Slytherins, who were sent to one of the bigger classrooms).

Diana made her way over to the Hufflepuffs and joined them so that she could get to the 1st-floor bathroom. When she split from the Hufflepuffs and slipped into a deserted side corridor, she was surprised to see Harry closely following her.

"How do you keep doing that?" Diana whispered to him.

"What do you mean?" Harry asked.

"Sneaking up on me!"

Diana suddenly heard footsteps coming from behind them. She pulled Harry behind one of the statues. She and Harry pecked around and saw Snape heading in the other direction.

"Where does he think he's going?" Diana said, "He should be with the other teachers."

"Beats me," Diana and Harry followed behind Snape for a bit.

"Looks like he's going to the third floor."

Diana was about to say something else before a gross wet smell hit her nose. She turned around to see at the end of the hall the troll was heading towards them.

They ducked out of sight again and watched as the troll made its way past them into another room.

"The keys in the lock," Harry muttered. "We could lock it in."

Diana barely heard what Harry said, due to her fear, making it hard for her to think straight. She was freaking out over what was going. All she did was a nod to Harry.

They crept over to the door, hoping that the troll wouldn't notice them. When he got close enough, Harry leapt towards the door and locked it. The two of them ran to the other end of the hall and let out a sigh of relief. They were put on high alert again when they heard by a loud scream.

Their heads snapped around to where the sound was coming from, and Diana immediately started running back towards the door. She opened it and rushed into the hall and over to the entrance of the girl's bathroom.

Diana saw Tilly trapped in the corner. Shaking like a leaf. The troll kept moving towards her, smashing various objects along the way.

"TILLY!" Diana shouted. This caused Tilly to look over at Diana.

"Distract it!" Harry yelled to Diana.

Diana picked up a bit of broken sink and tossed it against one of the other walls. The troll turned its head to where the noise came from.

Diana and Harry started motioning for Tilly to run over to them. She did so while narrowing avoiding the troll's giant club by jumping over it.

They would have just run out of the room that second, but unfortunately the troll swung it's club around again, blocking the door.

The three of them panicked as the troll roared at them. They tried to move out of the way and ended up getting separated with Tilly and Diana running to the broken stalls and Harry somewhere behind the troll.

When Diana turned her head, she saw that Harry had done something unbelievably stupid. He had taken a running jump and was now hanging off the troll's neck with his wand up it's nose.

"What the heck are you doing!" Diana shouted in a panicked tone.

"DO SOMETHING!" Harry yelled.

Diana started looking around the room, trying to think of something. Looked up to the roof and saw that one of the lights was hanging on by a string. She didn't even think and just pointed her wand towards it.

"Diffindo!"

There was a snap, and the light fell down on the troll's head. It wobbled around for a bit before falling onto the ground.

"Oh my god," Diana said. "Did I kill it?!"

"I don't think so," said Harry, I think it's just been knocked out."

Diana let out a shuddering breath.

Harry got up, looking a little bit shaken. Diana moved to grab his wand for him. When she pulled the wand out, and the three of them let out various ewws.

"Hey Harry," he looked over to Diana. "Come here!"

Diana moved to try and wipe the troll snot off on Harry's shirt. He quickly protested and moved to avoid Diana at any cost.

They stopped joking around when they heard Professor McGonagall burst into the room, closely followed by Snape, with Quirrell.

Quirrell took one look at the troll and looked like he was ready to pass out. Snape bent over it, probably checking to see if it's alive or not. And McGonagall was giving Diana and Harry a look that felt like it could burn holes in their heads.

"What on earth were you thinking of?" said Professor McGonagall.

Diana just stood there, still holding hers and Harry's wands. She didn't know what to say. What could she say?

"You're lucky you weren't killed. Why aren't you in your dormitories?"

"I….I.." Diana shuddered.

"Please, Professor McGonagall, they were looking for me," Tilly said out of nowhere

"Miss Blake!"

"I went looking for the troll because I thought I could deal with it on my own. People were joking around about fighting the troll. I took it too seriously." Tilly said, and then turned to look at Diana and Harry.

"If Diana and Harry hadn't found me, I'd be dead now. They didn't have time to come and fetch anyone. It was about to finish me off when they arrived."

Diana couldn't believe what was happening. Tilly Blake, the girl was scared to look at some teachers in the eye, because she was worried that even a funny look would get her in trouble. She was downright lying to three teachers like it was nothing.

"Well, in that case..." said Professor McGonagall, staring at the three of them,

"Miss Blake, you foolish girl, how could you think of tackling a mountain troll on your own?"

Tilly looked down in shame. McGonagall looked over to Snape then back to Tilly.

"I believe that five points should be taken from Slytherin for this," said Professor McGonagall. Snape just gave a non-committed shrug, and Tilly didn't seem to react.

"I'm very disappointed in you." When hearing that Tilly looked ashamed, and small tears began to build in her eyes. Since she was looking at the ground, none of the teachers could see that.

McGonagall sent Tilly on her way and then turned to the other two children left in the room.

"Well, I still say you were lucky, but not many first years could have taken on a full-grown mountain troll. Mr Potter, five points Gryffindor. Same goes for Ravenclaw with you, Miss Beatrix.

Diana paused.

"Wait a minute! We just did your jobs for you, and all you have to say is 'house points', that doesn't seem right." Diana thought to herself.

"I will be letting Professor Flitwick and Professor Dumbledore know about this in the morning. You may go."

The two of them hurried out of the room. After they were a reasonable distance, Harry spoke up.

"That was weird, right?"

Diana nodded her head. "Bit underwhelming, to be honest."

They stopped when they saw Tilly waiting for them. She made her way over to them and stood there. Looking like she didn't know what to say.

"Thank you," she said. "For saving me, I mean."

Before neither of them could respond, Tilly turned and started making her way back to the Slytherin common-room.

Diana and Harry just stood there for a little while. Trying to process everything that happened in the last hour.

Harry turned to Diana. "See you tomorrow, I guess?"

Diana let out a small chuckle and nodded at Harry.

Because of that night, the three of them had been changed forever. I think it's safe to say that they were then bonded for life to say the very less.