Yes Kori, that can happen, the brain often switches things around in dreams that can be upsetting.

If I have some kind of upsetting arguement with my husband at night, I can have terrible dreams that are very vivid of when he cheated on me and was mean to me when he was an active alcoholic. Sometimes other things come into these dreams that I don't know why they do, but that is just the way our brain can do things while we sleep in an effort to try to process something.

I will say that I have experienced night terrors which were horrible, so much so that I was afraid to go to sleep for a while. The night terrors were about the trauma I experienced, it was awful.

IMHO, I would say dreaming about a teacher and your mother that way is connected to the sense of "powerlessness" and being made to do something you did not want to do too. It sounds like your brain is trying to figure out how to put these emotional challenges together and store them/ process them.

OE