With some parents it is difficult isn't it. Both of my parents have Ophidiophobia to some degree. I told my father I wanted a BP and told him it would stay in my room and that they wouldn't even know I had it. Ever since I got it hes been incredibly curious about the snake, always asking questions or peeking into its tank. It just takes time and talking good luck with your mom! If my phobic father can handle a snake, I'm sure anyone can.