I need some support and good advice

Im 25 years old and I am a college student. Last year I moved out of home (lived with both of my parents) to attend a university. While I lived at home both of my parents were abusive; my mother was physically and emotionally abusive. very controlling. She used to always provoke arguments, and physical altercaltions with me and I didn't understand why. always wanted control over every aspect of my life particularly finances, whenever I got money she demanded that she got half of it. I took the abuse because I had no where else to go and no one in my immediate family will help me. My sister and I are not that close, and she didnt care what I was going through even though I see her on a regular basis. Everytime my mom would hit me, or do something crazy I was blamed for it

Anyway, now I live on my own and I don't have a car. In the beginning I did but it broke down and I had to have it towed away. My mother every month helps me out by taking me to the market. (thank god for that) And while it seemed that our relationship was getting better she has not changed. see I recently have some money to buy a car but my mother refuses to help me get one. She makes up all these crazy excuses to not help me out. sometimes she complains that she has to help me out by taking me to the market every month and about the gas she burns coming up here...yet she outright REFUSES to help me get a car. I already have the money she just will not take me to go buy one.

I dont know anyone close enough to help me out in this predicament. my sister will not do it, for some reason my sister has never been the type to want to help me with anything. I never ask her for a thing and the few times I do its like pulling teeth to get her to help me. my father will never help me

I never can go anywhere, I literally am in my apartment the majority of the time except for when I go to class. My life is just passing me by. when I do catch the bus or walk to the market, I have like 3 or 4 men hitting on me, and asking do I want a ride with them in their car. I am not in the best of neighborhoods so this type of behavior is likely to happen. When I tell my mother this she just tells me to "watch my back". its really dangerous for me to walk alone or catch the bus with men always preying on you. I rarely walk to the store or go anywhere because of this. This is why I need a car

The worst is that she wants half of the money that I have to buy my car. She refuses to even help me cash the check because I wont give her half. How am I ever going to break free if she is always pulling me back??? I really need help. I dont know what to do. I am scared to ask anyoen for hlep in fear that they will take advantage of me