If I may put in my two cents.. Make sure your W understands what your boundaries are before you do something drastic. Early on in this whole mess, I found out that my H took our child out w/OW and her daughter. I went nuts.. So, from that point on, I told him that he was to never expose our child to ow. You are right - you need to protect your kids and your W is not thinking straight right now and I'm sure is rationalizing her bad behavior and poor choices to expose her daughters to OM. Define your boundaries and hold her accountable.
