I am sorry. I did not realize that you were pursuing an education.
Yeah, it sounds like mom is doing the "mom knows best" routine which comes with having you and your children, living in her home. I am familiar with a mother's desire to keep her adult child under glass, and protect her from making further poor choices. Mom is not however, under any obligation to lend you her car.
Sounds like mom has good intentions and wants you to have the best shot a long term opportunity. And yet, Fall semester is 6-7 months away. And in the meantime ???
Could you put those 2 AA degrees to work for you? How about volunteering at the nearest school, in keeping with your desire to teach. Most schools need help and it will look good on your resume, down the road.