I'm *WAY* late on this thread.
Sorry for your troubles. You did the right thing by being honest. It isn't over.. your journey or your job. Now what you need to do is help her understand why who you are is not a threat. You are just a person, the same one she fell in love with.
My wife and I have very different fashion ideas. She doesn't *see* most of the things I see. As an XX, she just views it as a liability, not as an expression. (Which is sad)
Have you seen 'The Expanse'? Shohreh Aghdashloo wears things I only wish I had or could pull off. So pretty. But those are things we appreciate because we don't like the boring stuff assigned to us and we just *pay attention*. We have taste. It is a positive feature, not a negative one
Just do what you are doing, and *talk* about it. Don't hide, it is too late for that and it would not help you if you did. As you said, you have been doing this since age 5. This isn't a part of yourself that you can discard. Perhaps she is mad because she does not understand it. As I said, your job isn't over. You need to help your partner understand that you are *still* her partner, and that you are still committed.
This thing we are should not ever end a relationship. I'm sorry it sometimes does. Just keep after it, show your dedication. Things will work out.
- MM