Ah, good Dr. You have another thread somewhere do you not? I think I posted to that, but if not...
I think PL is right. You need to keep these things to yourself. If your W is like mine (and countless other WAS & WAH's) then she doesn't want to talk about it. If you are like me and all the other LBS's then you DO. Well, it can't be both, at least right now.
I would write the email, then file it away.
Maybe, if you want to express your feelings, just simply make statements of them and leave it at that. It's what my C said for me to do and I may, but more than that she was really suggesting that I stop asking. I feel that our W's will need to come clean eventually before they will forgive themselves for this, and forgive US for what we did leading up to it. Give her time to get there.