One thing that I think should be mentioned that wasn't is your ball speed.
I'm assuming you actually throw 85 at 13, which is pretty damn impressive if you do.
A very real possibility is that your tendons/arm are not matured enough to handle it. One thing that ASMI said is that high schoolers throwing above 85 is increasing their chance of injury because even by junior year they're not matured enough. At 13, it's even more exaggerated for you. I'm just saying you may want to be aware of this, and what you do with this knowledge is up to you. You may still throw 85, because you know you developed early and can handle it, or you may settle it down except for when you're being scouted.