Wow your accident sounds scary, you must be really brave to have come through that!
Do you have any hobbies or anything that can get you out of the house more and away from your Dad? and also help you to meet new people at the same time? I get lonely too so I'm doing a language course, it's good fun and it helps me to get out of the house and be around people!
Have you tried any sort of counselling? Maybe that would help aswell?
"The Optimist sees the rose and not its thorns; the pessimist stares at the thorns, oblivious of the rose."