My idea is try and see a therapist. Ofcourse not to fix you, there's obviously nothing wrong with you. Go for a few sessions, and let the therapist to get a feel of you. Then, ask your mom to come with you. Maybe trick her by saying its lunch or something, and, along side with the therapist tell her exactly where you stand, and tell her she can ask any questions shed like. Its worth a try imo, gl hun!