Hey Mel,
First I am really sorry for what you are going through. I know. Been there. Went through an almost identical scenario last January. It was hell.
But here is the possibly good news.
My wife and I are still together. And we are still good friends. And honey I am transitioning. No, I cannot say everything is perfect. She no longer sees me as a man (neither do I, of course), and it is still possible she will throw in the towel and leave. I live with that.
But...
...nine months and counting....we are still together.
Every day I take as good news.
And...get this...your wife agreed to counseling!
Mine wont do that. Wont read a book. Wont talk to a therapist, or look at this forum.
Id say, comparing situations, you are in a hopeful place, and better off than I was those months ago, and yet my marriage, though undeniably shaky...lol...is still standing.
I wish you all the best.
Day by day, sister, day by day.
Hugs
Sammie