Mom refuses to let me leave restrictive group home

I got an application for Family Type Homes for Adults, which is in practice the same thing as the group home I'm in expect for one key difference: I'm actually able to leave the house for go to school, or to the community.

My mother does not like this, she told me "what if you leave the house at night and you see a drug dealer and you buy cocaine from him and you'll die. The group home you're in is safe."

This is the same woman who spent all my college funds behind my back and refuses to let me go to college because "you'll meet strange men and they'll kidnap you and they'll rape you and cut your body into pieces to flush you down the toilet."

The group home I'm in is filled with terrible, rude, abusive people and nobody is taking ne seriously. I'm always angry when I talk to others about this and so they keep giving me more and more anti psychotics I DON'T need (and my doctor from my stay in the ward told them that all I have is autism and I don't need any more medicine) and I feel sick all the time.

What do I do? She refuses to see that I'm still not living independently, that family type homes for adults are for people who don't want to live alone. She keeps sqwuaking "the drug dealers the drug dealers!"

She genuinely doesn't want me to ever move out. She told me her plan is for me to grow old in here and eventually die in this house because it's the only way to keep me "safe "

I am heavily suicidal because of this and nobody takes me seriously.