Her reaction hurt you so badly because she isn't supporting you in something that's really difficult and important for you. I'm sorry she reacted that way - you don't deserve that. You deserve love, compassion, and support. You did nothing wrong in telling your friends.

My T is always telling me that sharing our experience (at least in general terms) with friends can often bring us closer to people. They often feel honored to have us share something so significant with them. I know when I told my best friend, it definitely changed our relationship for the better. We have a deeper friendship now than we ever did before.