Kitty:
Im sorry you have to deal with that in your family; we all have family like that on one side or the other, some are in closer relation than we would like. The best thing you can do in a situation like this is live your life on your terms and show you can be happy without them in your life if they can't respect you or the person you chose to be with. Just surround yourself with positive people who will not zap you of energy and negatism. ;)