Welcome!
It's possible she's still afraid of telling you everything, since it can be hard to spill a secret that's been desperately kept. But she also may not know herself; when my wife came out to me, she really had no idea where she was planning on going with that revelation yet.
My advice would be (and kind of always is, heh) to try to communicate as much as possible.
Tell her that you want to know the woman she will become, but you wonder why/what she isn't sharing...
Good luck, and my other piece of constant advice is that a happily ever after is usually possible in a relationship where both partners are still in love and still working at it.
