I'm so glad you were able to record her! I'm glad her career was destroyed! Teaching is fucking hard, but you know what, if you don't want to actually teach, go work at Walmart or whatever. You don't get to bully or shame kids, full stop, period, end of sentence.
I once had a principal bully my middle son. It started with her telling me he was "too stupid" to be in a French Immersion program (Canada, eh). And ended with cops at the school questioning him and my youngest, without my knowledge or consent for an incident because she was "certain" my son "did it". He didn't. Also, he wasn't too stupid for anything, and now at 29 is a brilliant, educated full-functioning member of society with a good job and he's a pretty nifty writer to boot.
I sincerely hope this bitch never taught another class.