It sounds like she really needs to go see a psychiatrist and possibly be on meds... I don't know how you can get her to go see someone, but I would say that "intense sadness" is definitely something anti-depressents might help with.
I feel for you Mules... I do think that this is not about you nor about the kids but something that needs to be fixed inside your wife's head. Don't take anything she says personally and please know that your efforts are valiant -- you did not do anything wrong. Perhaps your own IC can help find a way to help you encourage her into better psychiatric care?
Also, you said she stopped going to church -- maybe you can go with her? Are there people there they she can become friends with who may be able to help her? Just a thought...
You are a great person and a great husband to be trying so hard to save your marriage and keep your family intact. Never forget that. Other men may have thrown in the towel, but you have stepped up and should be proud of that. I wish there were more men and more fathers like you in this world. Don't give up. Remind yourself that this is not about you. Keep the faith.
M 39 H 34 D 6 M almost 8 years T 11 years Bomb: 6/5/08