I sat through a marathon of all eight episodes of Transgeneration the other day, and on it Lucas, one of the four students' Dad describes how he read that mourning is a definite part of how parents react to transitioning children, because they are in effect, dealing with the death of a child.
All I can say is that I hope your Mom can find her way past this to acceptance, but ultimately that is up to her. You can do what you can to make it easier on her, but ultimately it is a question of how well she can deal with that loss that will determine things.
I sometimes worry very much about this in my parents as well - they've been extremely accepting and supportive of me from practically day one, but I kinda sometimes feel like they're in a weird kind of denial about it. It doesn't help that I haven't seen them in a year, having left only a few months after opening up to them. I'm on a working holiday visa in the UK, but from South Africa, and I'm terrified that they'll reject me when I finally return home towards the end of the year. My brother was over here with me this year, and he already seems to have unconciously distanced himself from me.
But I suppose all we can do is give them the time they need, information if they ask for it, and unconditional love from our side. What Will be Will be - we cannot make those decisions for them.
Good luck with your mom, and I really hope it works out for you both.
