At the risk of sounding unsupportive (which is sincerely not my intent), is it possible that you’re sending out mixed signals without knowing it? I understand that you share three kids together and it’s natural that your daughters would come to you to talk about their relationship and problems with their father. But, and perhaps it’s just the mode of communication, but it sounds like you’re pretty fixated on his fixation on you. You seem to know pretty intimate parts of his life that would be unnatural for him to share with his children. Could this possibly be contributing to the problem? Could you be an active participant in this battle without realizing it?