GH31
I am not pro here but I have read a number of responses from those that are. If I understand what you are saying is you have not exposed as she is concerned you will show them to her family.
Then you need to expose to her family. But when you do brace yourself as she will not be a happy camper. You will have to take the high ground and tell her that she is the one who is attempting to carry on an affair in secret and it is wrong. You are wanting to work on your marriage, and you cannot while the OM is in the picture. Trust me I know, I have the OM in the picture and my WW is wanting to separate. As they have told me here many times the "AFFAIR FOG" clouds the judgement of the WW. One of the things that helps jar them out of the fog is having to deal with the exposure and embarassment of having to own up to her behaviour.
Not only should you expose to the family but also to friends that can influence her.
I have been used, deceived, lied to again and again and again.
I am sorry you are having to go through this but yes this is part of the affair addiction. Like one of the posters here, Melody Lane (I recommend you search on her name and read her responses, she is good for giving one a good kick in the behind when you need it) that the WW in an affair are not in their right minds, they are falling down drunk / drugged with the intoxication of the affair.
Is she willing to go to marriage counselling?
Are you in Marriage Counselling?
What will happen to her father if she leaves?
What does her father think of this situation?
Does she respect her father and what he says?
Right now your biggest weapon is going to be exposure.
Also read up on posters like Melody Lane, believer, and Pepperband.
Good luck man. I fully sympathize with you as I am going through the same painful process and it is no picnic. Keep posting and reading it does help.