*huuugs* thanks Leiandra.
My mom, as part of her illness, can handle about the quantity of detail a 7 year old can at once, so here's what I plan to say:
This is hard for me to say, but I want to do it because it's important to be honest with you.
As you know, I was unreasonably anxious and uncomfortable around people growing up... what you may not know is that I also saw a stranger in the mirror growing up.
You see, while everyone else saw me as a pretty girl, I always felt like a boy. I didn't know any words to talk about it, though, so I didn't.
There's lots more I could say about this, but basically, I have a male mind and heart. I have known this for a few years... but I didn't know anything could be done about it. Now I do. It's called "transitioning." That means that I will be working with doctors who can help me look like the male I know I am.
I feel so much more peaceful now... I have friends who know me as a guy and I have been hanging out in a men's bible group and I can't even tell you how good and right and whole that feels.
And from there I think I'll just let her ask questions, say whatever she's gonna say, and remind her that I love her and never want to hide things from her again.