Do you mean the T expects your mom to be in the room at your next session? I would think that is way off base even if you weren't real close to being 18. If you were 12 I wouldn't think the parent should be in the room because the majority of people's problems that they go to therapy for are actually caused by the parent. Not saying that's your case because I don't know anything about you. But I would think therapists should not allow parents in the room if kids are over say 6 years old. I wonder if there is a HIPAA regulation that covers this for therapy?