Hello cia112,
I'm sorry to hear of your situation with your mother. It is great to hear you are in college.
I think the first thing you need to ask yourself is "Do I have the means to take care of myself if I leave?"
Have you planned for all the expenses you will incur. Do you have a job? Have you created a budget? What if you break up with your boyfriend? Where do you go?
Do you have a community of people to support you if you lose all your JW friends?
Have a plan before you leave. So, when your mom asks what are you going to do about Fill in the Blank you have an answer. That way you can tell her "I love you Mom and it is time for me to leave home."
Take Care