First of all Welcome to HealingWell. Give us a bit more info on your disability? What did your parents tell you had happened way back when and why are they telling you now?
I would like to see you stay in the moment and not feel angry towards anyone. It feels to me like whatever happened has caused you to be the recipient of a settlement of some kind when you are 18 years old.
Parents try to protect their children from truths that they fear truth will cause their child great pain and perhaps this is what happened. Wait until you get the full story before you judge anyone.
Leaving your town would not be in your best interest right now, where would you go? Would you be knee - jerking?
Do yo have a therapist? If not look into getting one to talk out your feelings with.
Know we are here for you and we care.