"I know I've made the right decision because your dad is dying and it's not made me want to come back and it's not made me care about you"
This has got to be the epitome of cold, cruel and heartless behavior. One has to wonder if she would say the same to a friend, neighbor or coworker who had a relative passing away, I suspect not. I can't imagine the motivation for this other than to hurt you in the deepest way she can think of. I'm sorry you had to suffer this on top of losing your father. I hope your W learns to regret those words and apologizes to you some day, if not then I would be very concerned about her character.
