Argh, Ohio. I swear.
Okay, so looks like this is all about just figuring out how you're going to get through the next few years at home, then, unless you can think of another option (like asking a family member who might be more supportive to live with them).
IME, as someone who had to bide their time in an abusive home before they could leave (I left just before I turned 16, but not legally, so it was a highly risky situation, but I even has to wait a while for that opportunity), I know how this slog can go, and how long it can feel like it's dragging on. In my experience, looking back, I feel like just doing all I can to get through each day, and keep my sense of self fully intact each day, was what got me through it. I did do a lot of daydreaming and planning for when I left -- particularly so the moment I could, I was completely ready for it, so wouldn't miss that opportunity. I also did all I could to get additional support (did you ever follow up with that group I linked you to? If so, what's up with that situation and possible source of help?). I did all I could to use my outlets for my feelings. For me, those were music, writing and art, not sure what they are for you.