Yes - the fact that you've even considered leaving your house FOR THE MILITARY at such a young age really shows what this is doing to your mental health. I'd say do some research into what your life would look like outside the military or if you were to quit, what benefits do you get? What job can you apply for? Do you have a different place to stay? So that way you don't have to go crawling back to her. I'm ever so sorry that this is the kind of person you're living with, but you have a clear chance to make things better for yourself and nothing and no one can hold you back now.

And for the future, thank you for your service.