Hi Katie,
I don't know if you've come out to your mom or not. I did, though it was over the phone, as I'm in NC and she in MI. I was extremely depressed and absolutely needed to talk to someone. I decided to call her. It was a great relief for me and she was very supportive. She told my sisters also and like her, they were supportive. I was somewhat surprised and expected something less than that. A few weeks later, in a letter, she said she wasn't really surprised, which I was very surprised to hear. She said my behavior as a child was her clue. I didn't know that my behavior was so obvious. Anyway, as indicated by the others, coming out to your mother could be good for both of you.