Dear Lindsey:
It's been 15+ years since I came out. My entire families' reaction was rejection, total rejection. My daughters, for whom I was extremely close to disowned me and thus the grandchildren too. Though there has been a few instances of communication; it's mostly none at all.
I wish I had something to say encouraging here, but about all I can say is cherish the relationships you have and hope that others will have a change of heart. I'm cut off entirely from my family and I still miss them but not painfully; however, life goes on and I try to make friends and have relationships whenever possible. In no way am I lonely and I do have some terrific friends . . . I'm content.
I mention this only to illustrate that people and family are fickle but life moves on. We love them nonetheless and sometimes receive grief and pain in return for our efforts. Still, I'd do it all again and would consider the resulting suffering as part of the deal that was never in my control nor based on a relationship as strong as I thought existed --- being a little wiser and occasionally sadder for the experience.
All in all though, there's nothing like seeing an extended expanse of time pass living as Rachel and appreciating the world so much more fully than was possible before transition. I'm certain that will occur for you as well.
Take good care from someone who been there and moved on,
Rachel