Sorry to hear this man. But you are right, family can be a blessing or a living nightmare. Have both in ours, and went through a similar situation with an uncle and his lunatic wife. Unfortunately the banshee was successful in alienating the entire family and no one was allowed to see or speak with him for the last few years of his life, even told us there wouldn't be a funeral, and she would do as she pleased with his ashes. If you can get things to work with your dad do so, but only within reason.