My dc are very close to their auntie (my stbxsil). She adores them and the feelings are mutual. However, recently my brother and her have had a very acrimonious split, a third party was involved and it has transpired that she has been involved with this other guy for a few months. I am heartbroken for my brother, who is a lovely man, but I am being torn as he has said (possibly in his angry state) that he would appreciate our support in cutting ties with her. Has anyone else experienced this situation? This has been a bolt out of the blue for all of us and part of me feels very selfish for feeling sad for my kids that they may lose their (only) auntie. So, AIBU to keep some form of relationship with her for the dc's sake or should I respect my brother's wishes? Really stressing over this. I should point out, I've taken a 'none of my business' approach to the personal side of the issue, I don't get involved in other people's marriages, and although I am angry at my brother's wife, I am trying to look at the bigger picture. Any advice? 