I can understand how it would be hard to make a move and leave your mom, even though, you aren't getting along great with her for now. Is the boyfriend paying for your therapy? The decision of whether or not you see a therapist should be your mother's decision. Maybe you could talk to a school counselor. Seeing your dad being depressed has to be hard as well. I'm glad you have you grandmother, even if you can't tell her everything, you do have a safe place to go. Wishing you the best.