Super controlling mom, help?

I'm 19, and my mother STILL treats me like a child. She won't let me live in a dorm room and I am in college. Lately, I decided I don't want to go to therapy anymore. I'm better now, but she insists to go (its something she uses to control me with) but I am 19, don't I have the least RIGHT to choose if I want to or not. I try telling her I don't want to, tried talking to my dad who agrees with me, but my mom is stubborn as a mule. Last time I stood up against her was when I was when I was 18 and I got kicked out of the house for speaking my mind. Anyone with insight about my situation, please help. Tired of having her make all my life decisions, and I am afraid of getting kicked out or getting slapped or something of that sort.