Dude, I know all of this is super difficult but I think you are doing the right thing. There is no doubt that she is hurting too but believe me, by letting her figure it out on her own, you are doing the right thing.
As far as the in-laws, definitely bring it up in MC. BUT say that you simply miss talking to them. Reassure your wife that you won't say anything about the A. She will need that reassurance. It is up to her to tell them, not you - if you reiterate that to her, she will have more respect for you too.
The hard part in the MC will be the decision to say how you feel or remain detached. That's tough in those situations. I always felt safe in that environment TO say how I felt. The C is (or at least should be) a great mediator and not allow things to get out of hand - meaning that the C will be able to help you express how you feel AND help your W understand it in her language.
make sense?
Dude, I know it's hard but stay strong!
m 40 w 38 married 15 together 18 d11, d8 bomb 12/19/10 2nd bomb 3/30/11 COMPLETELY DONE