What is your viewpoint on this? You mentioned the opinions of ExW and girls, but not yours.
I understand that the girls were not close to him. That's okay. We are not always close to everyone in our families. I do feel that how he treated them.should not define how they treat him. He didn't contact so they won't either. I see this attitude in many Rs and I see people miss out because of it. I am not saying the girls are wrong, in their decision but just wanted to share this observation. How we treat people should be about us nit them.
I am sorry your exW is still communicating poorly. She is doing her best. It is nice that she is thinking of her father. It is hard to lose a parent.
Best wishes
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together