Not sure. The powers that be? [She gestures to the sky, vaguely.] Used to be there was only one of us. Chosen when we're teenagers. And when we died another got called. That's how it worked for me. But we changed that. Now all girls that had the potential to be a Slayer became one. We needed their help to win a war... [Part of her is guilty for that. Forcing a destiny on a young girl who might have lived a blissfully unaware life otherwise. Now they had to face the potential threat of death on a regular basis, even if they decided they didn't want to join them.]