Originally Posted by celticvoyager
I guess what I am asking being on the other side of things here is how do I best prep my daughter about d-day? We are gathering more info, because my wife and I smelled a rat months ago and I suspect he is seeing someone now.
Your daughter needs to come here and let us help her. While you can offer support, there is little you can do by yourself. It is important that they work through their own marriage problems.

married for 40 years
DS - 38, autistic, lives at home
DD - 37, married and on her own
DS - 32, still living with us