I can relate totally. I'm sorry you are having to go through this. My best advice is try to not react to what she says. You can't reason with her, because her actions are not grounded in logic, trying to combat with logic will not work. You can not control her actions. You can only control your own, and the way you respond. Keep trying hard in school. I know it's hard when they take credit, but try to get support and reassurance from others if need be, and tell yourself that YOU accomplished it. I'm sure you know if you or your mom did it. Keep trying hard and get in to college. There is freedom there. You can make a way out for yourself. It may take a couple years of trying to keep your mouth shut and not freaking out on her. But once you can make it on your own, her power is gone. You will get to choose when you see and talk to her. You will be able to set reasonable bounderies. But for now, hang in there.