I don't have to get it right, here, or anywhere. Somedays I'm angry about the divorce. Other days, I see how my ex-wife released me from her sphere of influence, and for this I am grateful.
If she doesn't' respond to my daughter, why would I think she's going to respond or even be friendly to me? I don't think about it much, anymore. It's so much more obvious as we now enter the 10th year of our co-parenting journey, that she really is a bit self-centered.