I'm sorry for you. That principal should be ashamed. She should hold you up as a positive example for all of those inactive parents and celebrate you!
I know beignets is going to weigh in on the bullying tactics this lady laid on you.
I'm glad you didn't move farther away because that place
needs you!
What do you even say to that kind of treatment? You probably took it only because you were exhausted, ailing and blindsided all at the same time. However, now that it's sunk in, do you have the kind of relationship where you can meet with her one-on-one and say, "Listen,...." That's what I did the last time I felt beat up by someone who should've done better. It made things awkward for a little while but in the long run it made things oh so much better.
Maybe you should have
two brownies. They're Ghirardelli... double chocolate.... and they're still warm......
(don't worry, everyone. there's plenty to go around.)