I don't have really much to add except my mother is the same way. She keeps telling me I'm always going to be a girl and have a girls body and blah blah blah. I'm moving very far out of state (though I know a lot of people don't have that luxury) and not planning on coming back until I've had top surgery and possibly a beard. We'll see how much of a girl she thinks of me then.
My younger brother and I look like twins now, right down to sounding exactly the same, and she's still in denial. I'm just giving her her own space to work it out, but she wants me to come off all medication (cannot happen, bad things happen when I'm not on medication) stop T for a year and live like a guy like that. I don't think she's right, and I don't think it's going to change anything, but I am NOT going back to a female body fat redistribution after I've worked my tail off for three months to look like I do.