"There's a way for me to stop being a Slayer?"
"A drug cocktail that was developed about twelve centuries ago." Giles confirmed. "Part mystical, part organic, it's purpose is to be deployed against Slayers experiencing insanity or are criminals. Treatment and prosecution has varied over the centuries based on the laws and medical practices of the times. The Watchers Council is a world wide organization and even through the Western world doesn't acknowledge the supernatural, members of the government, including the President of the United States and the Queen of England do. You are an American citizen and I am a British citizen living in the United States under a green card. Both of our governments would provide us with legal representation and we would be charged according to the laws of our respective countries. If convicted, sentencing would again be based on our countries respective laws. It's possible as a minor unduly influenced by Angel/Angelus that you might be sentenced to a lifetime of house arrest. Or they could throw the book at you, as the expression goes. Either way, your powers would be stripped from you, permanently."
"And help balance some of the people dead because of my choices." Buffy pointed out. "And you're forgetting something, Giles. I don't have to live in Sunnydale. I'm five months away from graduating High School. Leaving Sunnydale to go to college is an option my mother would probably jump at the chance for me to explore. Regardless, and boy is that a Giles word, I need to talk to her. Thanks to Spike letting the cat out of the bag last year, before I sent Angel to Hell and ran away, she knows about vampires. Your insistence on not telling her anything is upsetting her, I know it is and I think Xander is right, keeping Slayer related stuff from her is wrong. She's my mother, Giles, it's her job to take care of me, not yours. I'm going to tell her all of it. Angel, Angelus, people dying because of my choices and the potential consequences. She and I will decide where we go from here. Mr. Wyndham-Price is just the most recent person in danger because of me and you. I don't need more blood on my soul, Giles. I feel like I'll never be clean as it is."
"What do I tell Wesley or the Council?"
"You tell Mr. Wyndham-Price the truth about Sunnydale, you hold off on telling him or the Council anything until Mom and I've talked and made a decision. And you figure out why you've been treating Faith like crap."
"Excuse me? In what way have I mistreated Faith?"
"Besides the fact that you couldn't be bothered to find her a place to live at all when you knew she was homeless and your responsibility until Cordelia shamed you into it? There's also the fact that you haven't even attempted to train her or try to get her into school. All of which is your responsibility. She's the Slayer, I'm the extra, but until Mr. Wyndham-Price showed up you were being paid to take care of her and you haven't been. We'd all like an explanation on that."
Giles looked blankly confused as if it had never occured to him to do any of those things and given that he hadn't done any of it, did indeed beg the question, why? "I honestly don't know, I just never thought about it, any of it."
"Well, you need to figure out why, Giles, because seriously, you were endangering Faith's life, she was living in a motel room, Giles! Kakistos got into her first motel room, how many vampires got into her second room before Cordelia shamed you into getting her an apartment? And with inadequate training, you left her even more vulnerable. There has to be a reason for it, Giles! Figure it out, because I'm very sure the Watchers Council and your lawyer will want an explanation as to why you abandoned a teenager, a Slayer, one who saw her first Watcher murdered in front of her! Figure it out, I'll talk to you after I've talked to Mom and I hope you've managed to come up with some sort of explanation that makes some kind of sense." She slammed out of the Library leaving a stunned and bewildered Watcher behind, wondering 'why did he not take care Faith as he was paid to do?'