my sister dumps them off on my mom.
She'd rather be with a boyfriend.
just Pops out kids like she don't know how it happens.
First, your words and attitude really angered me. But, from what little I know, I can see you are in a rotten situation. Doesn't really excuse the language, but does explain it a bit.
From the quoted text, I can imagine being frustrated and even embarassed by the whole place.
The facts are that you want to get out, and somehow are working to get out. That the life at your mom's house is less than peaceful and doesn't sound, well, conducive to your success.
I can tell you that "the best revenge is a life well lived." Make, try to make, contact with better people. Through church? Work? Horses? Neighbors? The tough thing is that you don't have a place to vent and strangers may pull back from you if you share too much of what life at home is like, or if it shows too much on your face. You may kind of have to fake it in work and social situations.
But, as bad as things are at your house, you know there are worse places. And, you have to know that people have overcome worse and left it behind.
Read biographies of people who have overcome much. Your librarians can help find those.
Finally, take what you need while you have to be at home. You need a roof and food? Be grateful that you can get that. But never lose sight of your dream and goals. I used to have a small piece of paper on my wall that only said, "Keep your eyes on the prize." Don't know how much time I stared at that with silent tears running down my face. But, I've been living the prize for years now and am glad I stuck with it.