Gertrude,
You did the right thing coming out. It very often is a messy process that doesn't shake out for a while. Try to relax a little. You don't have control over how others handle your news, but if you handle yourself with class, being the best person you can be, at the end of the day, you can say, "I did the best I could. I was loving and supportive to my kids, and they must take it from there." If your kids fear being honest with their Mom, then this is not just about your news. Be respectful of your family. The thing is, you deserve respect as well. It is a difficult situation that no one who is trans asks to be that way. It is who we are, and it is not a reason to condemn us in any way. Give it some time.
Moni