Hi, I would think about what issues you all had as a couple. There might be a few things that you might be overlooking. Does she live far from her grandkids when you all are together. Sometimes people just grow apart. Personally, in past relationships I felt as though my partner expected too much time and attention. Could you be demanding on her and not even realize it. My advice is to give her room. I feel this is the only solution at this point. I would not be demanding. If you feel you can't cope w/ the situation, then it probably is time to move on. She did make the major move.