I'm not sure. It almost sounds to me that she may be angy that the OM isn't having to go through the pain that she is. She may actually be mad at him.
Either way, I don't think it is the critical issue, by far. But I've been wrong before!
I honestly think she is way too concerned about the OM. I really think lowneil needs to take a tough stance on the no contact. The fact that she is "mourning" means she is not over him and still has feelings. I heard those exact words. The way lowneil deals with this will be critical too whether she strays back there. Personally I am uncomfortable with her going to lunch in his town by herself no matter how "sick to her stomach" she feels.