when my daughter told me she thought she was transgender I'm afraid I didnt handle it well. I felt like my daughter had died and someone else was in her place and I grieved the loss of the daughter I had known. Maybe this is part of processing such a profound change in your family? I don't know. She's still my child.
I do know that if I could do it over again I would hope to be as accepting and supportive as you are. the best thing you can do is exactly what you're doing--supporting your child through a time of change. But cut yourself some slack too. You are going through some profound changes too and change is hard. I do believe it will get easier as time goes on.