When you get into college next year, look into the counseling program. If you can get a part time job you can pay the bills without her knowing you are seeing anyone for therapy. It sounds like you're suffering from some stress-disorder.

Your mom doesn't sound stable emotionally. Try looking up Borderline Personality Disorder. It may not be your mother completely but may help you shed some light on her thinking processes.

You can also get in the chat now. There are a lot of people who are patient and will listen to you. (Just click on the Chat (x) button, then hit the door, then go to a room with people in it)