The denial is so thick many times counseling doesn't do much at this point. Time and patience are key. I'm not trying to be a downer at all. I just want you to be aware.
My xw and I went to 3 or 4 counseling sessions. The counselor we had made things worse.
I can't even begin to stress how important it is to choose the right one. You really need to get a copy of Divorce Remedy and read it. It will explain what to look for when choosing a counselor, also visit When Therapy Hurts forum here.
If your wife is willing to go, then do your homework and find pro marriage solution based counselor. She has to want to do the work though.
Keep posting and don't be afraid to ask any questions you may have.
Take care, distance yourself from the drama and stay strong.
Do not be afraid to ask the potential counselor questions before hand. Find out what their views are.