just a couple of thoughts
I'm sure it is tough right now, but this is the first step to the solution! I surely hope that the road is easier than it now seems. A couple of thoughts:
I am a committed catholic. In a recent thread, the OP had spoken to a priest (as she was going to church en femme and didn't want to blindside the pastor) and the priest said, and I quote, "It is not a sin to crossdress". That seems to make it pretty straightforward! Many of us here are committed to our religions so you might need to quietly mention this to your wife.
On the other side of the coin, my wife is completely supportive and my rock of refuge for Tina (my femme self). As we worked out who Tina is (we were married 32 years when Tina first appeared in our lives) one of the agreements is that when she wants her man, she gets him. My male side isn't going anywhere, and if that's the same with you, I strongly suggest that you make that very very clear to your wife. I'm sure much of her anxiety is that of losing you as her husband.
Lastly, hang in there. Letting her know you are still her husband and that the world has not been rent asunder will go a long way to keeping her secure and connected.
Tina