It sure seems like she is a monster. This poor kid! Then to run into her outside of school!
It may be just too much for him.
Hard to imagine that a student, an actual kid might have ANYTHING in common with a…a…TEACHER…!
A good book to share with a child who is going into a new class with a new teacher. Maybe read it shortly after school has started to get a feel for how your child is adjusting.