Summary: Christy Jenkins was kidnapped when she was seven years old by the Watcher's Council. She grew up thinking she was Buffy Summers and just before the battle of the First Evil the sisters will finally be reunited.

A/U: Set Season 7 BTVS and Mid-Season 8 Charmed. Everything after '12 Angry Zen' is ignored except for a couple things. While Henry and Coop are not in this story it should be known that Paige and Henry and Coop and Phoebe are already together. Paige also already has the ability to heal.

Pairings: None

Disclaimer: Joss Whedon owns Buffy the Vampire Slayer. CBS Television Distribution owns Charmed (I have yet to confirm this but I assume it's true since CBS has been looking at doing a reboot of Charmed and they couldn't do that without the rights.)

Author's Note:This is in response to a challenge Faithbblove101 posted to me in a guest review.

Prologue

"Mr. Jenkins, your daughter is destined to fight …"

"I don't care what you believe, sir," said Carl Jenkins. "You are not laying one hand on my daughter. Now if you would kindly leave my home before I call the police."

The men looked at each and nodded as the left the house. There were other ways to get the Potential from the Jenkins' home.

"We will have to take her by force," said one of the men an hour later as they watched the Jenkins' home from down the block.

"Agreed," said the other.

That night as it rained the two men returned to the Jenkins' home. They quietly searched for the window that led to the girl's bedroom. The last window they looked into finally revealed the girl and her sister asleep.

"Cast the locator spell. Make sure we get the right girl," said one of the men as the other cast the spell that had been designed to locate Potential Slayers. Once they were assured which girls was which they entered through the window just as lightning flashed.

One of the men held a cloth of chloroform over their intended prey's mouth making sure she would not scream. They grabbed seven year-old Christy Jenkins and made off with her into the night.

It was then that Christy's five year-old sister woke up and got out of bed. She had been having a bad dream and as she usually did she moved over to her sister's bed intending to sleep with her. But the bed was empty, her sister was missing.

Fifteen years later in a Chinese Sacred Garden Billie sat under the pavilion and crossed her legs as Lo Pan watched. "Can't I just sit in a chair?" she asked.

"Stop resisting. Just relax. Now, what happened the first time you tried to use this new power of yours?" said Lo Pan.

"Hmm," said Billie. "Well, I turned my parents into assassins."

"Oh ... I see. All the more reason to focus completely on what you wish to project this time, what you truly wish to find," said Lo Pan.

"After fifteen years, I want to find my big sister," said Billie.

Lo Pan nodded. "That's practical, not emotional," he said as he moved closer to her. "That's not how your power works. Think, deep down ... What is it that you truly want?"

"I want to see Christy," said Billie. "I want to know what she's been going through all these years."

"All right," said Lo Pan as Billie closed her eyes. "Then concentrate on that. Allow the world that surrounds you to disappear. Allow time to be nothing but an idea."

"Don't bend the spoon—Imagine there is no spoon?" said Billie as Lo Pan cleared his throat. "Sorry."

"Think of only Christy ... of seeing her again ... of where she went ..." said Lo Pan as Billie pressed her fingertips to her temple, "... of understanding. " She put her hands down and concentrated. "Let your power take you where you need to go. Now."

Suddenly, the world around Billie changed around her. The Sacred Garden disappeared to be replaced by that of a small bedroom in a house. She opened her eyes and looked around as she heard banging and got to her feet. "Lo Pan? Where are you? What is going on?" she asked as she walked over to the door. "Lo Pan?" Behind her, in the darkness, Billie heard movement. "Who's there?"

From behind a chair, a figure stepped out as Billie stepped forward and instantly recognized the figure. "Christy, is that you?" she asked as the girl before her cringed and took a step back. "It's okay. I'm not going to hurt you." She watched as the girl stepped forward again, close enough for her to see the girl's face. "Unbelievable."

Moments later Billie and a very young Christy sat on the bed, talking. "I hear them outside, whispering, the only thing I can understand is the word Slayer," said Christy.

"Slayer?" asked Billie as Christy nodded. "It's okay. It's okay. Look, I'm here now, okay?"

"I still don't understand how," said Christy.

"Yeah, that makes two of us. All I know is I'm supposed to be with you now and try to figure this out so I can get you out of here," said Billie.

Christy shook her head. "No, they won't let us. They won't let us."

"Have you tried using your powers?" asked Billie.

"Powers?" asked Christy in confusion. "What do you mean?"

"You know, your powers ... magic," said Billie as Christy shook her head. "Christy, you're a witch, just like me. You must have some powers. That - Wait ... Powers. That must be what they want from you." She noticed Christy's necklace on the nightstand and picked it up, it was the one her mother had given Christy for her birthday just before she was taken. "You're necklace."

Suddenly the sound of whispering came from just outside the door as Billie and Christy got to their feet.

"Is the memory spell ready?"

"Yes."

Christy clutched Billie's arm as they stare at the door. "It's them! I want to go home! Please take me home."

"Lo Pan?" said Billie as Christy let go of Billie and edged back to her hiding place.

"Hurry, Billie," said Christy.

"Lo Pan! Get us out of here now!" said Billie and suddenly she found herself back in the Sacred Garden without Christy.

That evening at the Manor Billie was talking to Piper in the attic. "You're sure that Christy said the word Slayer?" Piper asked.

"Yes," Billie said, "Why?"

Piper moved towards the Book of Shadows. "I remember seeing an entry for this Slayer in here," she said as she flipped the pages till she found the one she wanted and read from it. "Into every generation a Slayer is born: one girl in all the world, a chosen one. She alone will wield the strength and skill to fight the vampires, demons, and the forces of darkness; to stop the spread of their evil and the swell of their number. She is the Slayer."

"What does that mean?" asked Billie. "And what does that have to do with Christy?"

"I don't know," said Piper. "You said you heard them say something about a memory spell?"

Billie nodded. "Yeah. One of them said, 'Is the memory spell ready'. And the other said 'Yes'. You don't think they cast a memory spell to make Christy think she was this Slayer?"

"Possibly," said Piper. "Or possibly she is this Slayer and they cast the memory spell to make her forget you and your family. Either way I think you've been looking at this wrong. She wasn't kidnapped by a demon, but by human beings."

Billie's eyes went wide, she knew Piper was right. "You might be right. Which means she could be anywhere and she might not even remember me either," she said.

"It's a possibility, Billie," said Piper. "On top of that she may have a family. A mother, a father, sisters or even brothers. She might even have a husband and children for all we know. Family that she is not going to easily leave behind just because she once upon a time was Christy."

"I know, Piper. I know she may have another family," said Billie. "I just … I need to find her. Once we have a location we can go from there."

Piper nodded. "Okay," she said. "How are you going to find her?"

Billie held up Christy's necklace as she smiled. "I brought this back when I saw her. It's hers, mom gave it to her shortly before she disappeared," she said.

Piper nodded. "Okay. If you find her or need any help let me know okay."

Billie nodded as she turned toward the map and began to scry.