I have spammed her email, which means all her emails directly go to spam. I'm not going to mass mail her mailbox, which is what you're thinking.
There are social math teachers at my junior college, and there are weirder ones. The weird ones yell at classrooms full of seven people, and play games, while the normal ones don't have classrooms where you're walking on eggshells.
When I walk into her office hours, when there is no one else in the building, and she is there with another student, she gets very hostile. It was "thoughtless" in the way that I didn't expect her to "bite," (she's normally very comfortable with me) but really, can't someone just communicate "Hey, I'm with here with another student, can you wait outside?" Rather than "WAIT OUTSIDE!" I'm not a loud person, but she gets very odd sometimes.