Unfortunately you're just going to have to get over it. It's not your problem, as in it's not because of you. There's little you can do to change her opinions as you've demonstrated. You're going to have to come up with mechanisms to move on from it, maybe with your therapist. It sucks but just remember it's not you, it's her. She's the one with the problem. Believe me, I know what you're going through. My parents treat me very similarly to what you're describing. I'm not invalidating your feelings at all, it's feckin hard man. Personally I just got reminded of it all today in my own situation. Makes me feel so damn small. But there's nothing I can do. I just gotta move on and learn to accept it.