I think you hit the nail on the head - she just wants some one-on-one time with Dad. Next step I think is to coach her on how to speak up with HIM on the matter. Some here might tell you that you should have that conversation with him, but I think it's better and carries more weight if SHE does. There's a book on divorce/custody, can't remember if it's Mom's House/Dad's House or Joint Custody with a Jerk which talks about the problem pyramid, idenfitying who is at the top of the problem pyramid (who HAS the problem) and who needs to address it with whom.