I am sorry to hear that. I think your mother ignoring autism can be as harmful as her telling you have it while you don't. In both cases, you are not seen and accepted for who you are.

I have an official document stating that if I am incapable of making decisions, my parents are not allowed to make decisions for me and they cannot be with me in the room by themselves or touch me. I feel quite guilty about that, but I just cannot deal with what will happen otherwise.