At what point in this thread have I said anything about utilities?? Please read before you begin speaking on something that only you're talking about. Why should she pay you ask, well, because it's her home too. Just because she moves out should not leave me to deal with all the agony of the property. I would sell the place, but I can't!! The terrible economy took a toll on the value.But why should she be paying at all? You have the home.
If you let the judge decide, s/he will probably say that you have to pay all of it because you are keeping the home. Almost certainly you're going to be responsible for all of it after the divorce is final. So why in the world do you think it's fair to expect your ex to pay half of the mortgage?
And half of the utilities is absurd. If you weren't there, she could turn the utilities off -or at least down to bare minimum (no lights, just enough heat to keep it at 45 degrees). CLEARLY, you should be paying all of the utilities. I can't believe you're even expecting her to do that.
If I just say hell with it and walk away, I still have a responsibility to satisfy the note. She needs to contribute until the house is either sold or I find someone to pay her 50%.