Hi my Name is Willa, I'm new here and so glad this place exists.
All I can say about this is to emphasize what so many have already said here, your wife needs you at this time in her life and in your relationship. I think that she needs the comfort that you can give her and let's her know that her needs are being met as well.
That you have someone who is so supportive is a wonderful thing, give some of that back.
Good luck,
Willa