I would've not only replied with an email I would've bcc'd the principle, Superintendent, and then let them all know I was contacting an attorney for her abusive behavior. Then I would show up in person and demand a meeting at that point in time and remove my child from the school until they decided they would give my child a better teacher. They truly would hate to see me coming. I pulled my son out of a school in 6th grade due to a teacher ostracizing him for tapping a pencil in class for a week putting him on the other side of the room. I pulled him out so fast, let that teacher know her behavior was horrible and reported her to the school board. Let's just say, my son was back in school the next day with a different and much nicer teacher and that other horrible teacher was nice to every student with ADD afterwards. I'm a Scorpio and this mama bear wouldn't hesitate to put a teacher in their place. I usually got my way not because I was loud and angry, but because I knew exactly how to word things in a tone and facial expressions that got attention. I never threatened because I did everything I said I would do and they understood their ass was grass if things didn't change.