Trying to freeze her. Christy's face turned into a snarl, it was the only way to describe it. Piper Halliwell was responsible for so much. She was the reason Billie had turned on her. Her and her stupid thrice blessed son. She'd tried everything and she'd failed and she'd lost Billie, but here was a chance to fix it. Everything would be better. She ignored Billie's cries for her to stop and instead pushed ahead, Billie would understand eventually. She'd find a way to explain. She finally reached a good distance from the Charmed One.
"I've waited a long time for this" she said with a smirk, Billie wouldn't catch up before she let loose her ire and if Billie cared about her at all she wouldn't stop her. She had enough fire power to make Piper Halliwell a distant memory and she was more than willing to use it right now. She had to do this, and Billie would see that. She wasn't just doing this for her after all. It was partly her own revenge of course, but it was also for Billie, for Dumain, they all deserved revenge even if Billie didn't agree. Christy could explain it to her after Piper was gone. The fireball flew from her hand, aimed directly toward Piper