Yes what it reads is what Buffy's grave read on the show, but I just figured... I'd make up something the same, so why not?
"Buffy, this is Raven," Giles said. "The new Slayer."

"I've heard lots about you," Raven said. "You're known to be the best Slayer yet."

Buffy didn't say anything. Spike looked to her, he was concerned about what was going through her head. He knew her, and he knew that she wouldn't take this news well. A girl who was filling the slot her twin sister once filled... No, she wouldn't take this easily.

He was right. Buffy turned around, and pushed past him, out the door. Spike didn't follow her, he wanted to, everything inside of him told him too, except for a part of him. And that part was telling him to leave her be, that she needed, and wanted, to be alone right now.

"I'm Spike," he said, turning to the girl and smirking. "I'm part vampire."
Buffy was running, she didn't know where, and she didn't care. She needed to get as far away from Giles' apartment, from the new Slayer, as possible. Her mind was racing, and she felt like she was going to explode any minute. Tears were streaming down her face, and her vision was starting to blur.

Finally, a few minutes later, she stopped, resting her hands on her knees and leaning a bit to catch her breath. She looked up, breathing heavily, and took in her surroundings. She was at the cemetery, Faith's cemetery.

Slowly, she walked over to the grave that her sister's name was engraved in. It read:

FAITH SUMMERS
1986-2003
BELOVED SISTER
DEVOTED FRIEND
SHE SAVED THE WORLD
A LOT

Buffy got down on her knees, and sniffed back the tears as she traced over her sister's name. She hadn't visited often to Faith's grave, not as often as she should've anyways. But she came here when she needed to think, or was hurting, and just needed to be alone. And Spike understood. He didn't run after her.
"So, your mother was a Slayer, and your father a vampire?" Raven asked, looking over at Spike who sat beside her on Giles' sofa.

"And now I'm part vampire," he said. "So, you know 'bout me. How 'bout you tell me a bit about yourself? You definitely aren't the person I expected."

"Cause of my look? Everyone judges on the first impression, but I'm really not as unhappy as I seem. I was born into a great family, raised by great parents', and although my older brother was so overprotective, I loved him for it. Then, I got the news of me being the new Slayer, and everything changed. I was stunned, I mean, hello. That's not something that happens to every girl in the world. I mean, I'm only sixteen," she said. "But, I've always been interested in things like vampires... I never really thought they existed..."

"You talk 'bout your family in past tense," Spike said. "Why?"

"Well, when I became the Slayer, my Watcher thought it best to... Not inform them," she said. "You know, the whole secret thing? I didn't want to leave my family, but I joined up with an "exchange program" and I'm supposedly in England right now. But instead, I've been here studying slaying for a year. I get to go home in a few weeks, and see my family. Not for long, but it's something. You don't know how happy I am. I've been writing, but it's not the same."

He smiled. "You're a lucky one. Buffy, her mum passed, and she came to live with her da'. Then I'm told, he isn't her real father, he just considered himself it."

"Then why's she living with Giles?"

"He got sort of... Abusive. He always was, bloody bloke. Not physically at first, more so verbally. But Faith didn't take it, she snapped. He kicked her out, but soon after, Buffy did the same, she snapped, and she left. I left with 'er."

"Faith, isn't that..." Raven said. "She thinks I'm trying to replace her sister, doesn't she?"

He shrugged. "Buffy's been through a lot. She just needs some time, but I know 'er. And she'll come through."

Raven smiled, and looked back when she heard her Watcher arguing with Giles. She stood up, and walked over to the two, seperating them.

"God, you two are grown men, must you fight like children?" she asked, looking from one to the other. "I'm very disappointed in you."

She's a good girl, Spike thought. She's full of life, too bad her life might not last that long... I wonder if it's fully 'it 'er yet. That she could die any second, just like Faith. He looked down at his hands, and his mind travelled from one Slayer, to the next. Buffy's probably at her sister's grave. Crying her eyes out, and thinking about what she did, what she's going to do. Maybe I should stay the night... Dawn would... Dawn!

Spike stood up, grabbed his coat and had his hand on the doorknob, when he heard Raven questioning him. "Where are you going?" she asked.

"Need to pick up Buffy's little sis," he said. "I'll be back, don't worry."

She laughed. "Buy some rope while you're out, will you? Maybe I can tie these two up before they kill each other... Hey Giles, do you have any..."

Spike closed the door, smirking at the girl's words as they faded away from his earshot.
The door to the Summers' house opened, and Spike walked inside. He closed the door behind him, and casually looked around for any sign of Dawn. He walked into the living room, and saw her sound asleep on the sofa. Glancing at his watch, he saw that it was already half past ten.

He smiled, and walked over to her, picking her up in his arms gently, careful not to wake her. As he turned around, he saw Angel standing in the doorway, blocking his path. The brunette walked over to the two, and fixed the small girl so that her arms were wrapped around Spike's neck.

She opened her eyes, waking at the movement. "Spike?"

"Yeah Bit, go back to sleep, I got you," he said, and she smiled before closing her eyes.

"What did Giles want?" Angel asked, following Spike to the door.

"There's a new Slayer," he said. "Goes by the name of Raven. Good girl she is."

"A new Slayer?"

"'S what I said," Spike said, as Angel moved to open the door for him. "Thanks mate. If Buffy stops by 'ere, tell 'er that I got Dawn home safely."

Angel just simply nodded and waited for the two to leave before closing the door. A new Slayer?