She quit on her own the same day.
Apparently, she had a number of previous complaints and I guess she figured her bear-stuffing, child-terrorizing days were growing short anyway. That's all the information they had for me. They offered me a gift card. I turned it down. The last thing in the world I wanted was for them to think this was about getting free stuff. She was nasty and ill-tempered and had a reputation for being that way. Why they allowed her to stay knowing this about her is beyond me but it's also not my problem anymore.