She is an addict and an infidel. She is addicted to the high that she gets from her contact with another man, and until that contact ends, she will continue to lie and do ANYTHING to protect the source of her "high" and to make it to her next contact with him.
Confrontation and exposure is the only way to go, and so I am giving it my best to follow that course of action. The daughters are a part of that since they are adults, and so are my wife's parents, and so are the OM's parents. I really don't want to get into a debate with you on it, but refer to Harley and Glass and others about intervention techniques and rationales.