I can not deal with cheaters and drama. I would have to avoid that person until they came to their senses. Family or not. I can't stand being unwillingly involved in someone else's self inflicted issues. I hate feeling like a helpless, awkward bystander. That's pretty low of her to do especially since cheating is a sensitive issue for the family. She must seriously be having some mid-life crisis and is on head trip or something because of the weight loss.