When I first went to therapy, I began to have many dreams about my family/related to things that happened early in life---as if flood gates had opened. It was distressing...and a overwhelming...(sorry I am repeating)
I had gone thinking I would just have the T. help me learn relaxation techniques to help with my anxiety...no big deal...YIKES.
Do talk to your T about the dreams. (((((((((((hug))))))))
of course, now I am wondering how your parent(s) dealt with this behavior.