Gilda,
Wow. I'm very impressed right now; what you did took some serious courage. That said...
First off, she wasn't taking her role seriously. I meant it when I said she brought this on herself. Part of being in a supervisory position is learning that; there's a sort of studied indifference that the role demands. She may use this to turn her academic career around, or she may continue on as she's been. Either way, you need to do what's best for you.
Also, a lot of it goes back to what I've said before. Once you take the steps and get out there, you realize that the reality isn't nearly as bad as you've been expecting; you've built it up in your head into this big traumatic experience. This wasn't as hard as you thought it would be. The next time you find yourself in a tough situation you'll be able to draw on the experience gained here and it will be even easier. Eventually you'll find that you are able to perform the role as expected with little trouble. It's scary at first, but it gets better.
I'm proud of you and I'll play Guess Who with you any time.