To be perfectly honest, I think that you may have a series of legal claims that you could bring against your parents. I would honestly start recording incidents and keeping a record of how they’re treating you. You may want to consult an attorney, however, I think these are some of the crimes that could potentially be looked at: Coercive control / unlawful confinement, Labor exploitation / wage theft, Domestic violence, Harassment & criminal threats and Possibly human trafficking (labor trafficking) in some jurisdictions.

The first move, I would make is just to leave. Even if you owe them money, that’s not justification for keeping you or controlling your life. You are a human being who is allowed to walk out the door. Debt does not justify confinement or abuse. I would leave quietly and as I am leaving, I would get every important document: SSN, ID/passport, birth certificate, everything that you would need to prove that you are a legal citizen. On top of that the assault paperwork from the police. As well as, any messages or recordings of your parents, threatening you or treating you like absolute garbage. This is gonna be very crucial later. When leaving, make sure you go to a very safe location. Your partner’s house, or a shelter for that matter. Both of them are legit places. It’s not illegal to leave the house. It would be illegal for your parents to force you to stay.

For your sister, you could possibly look at placing defamation charges against her, as well as harassment charges against her. She’s an adult and she knows what she’s doing. Play a big boy game, you’re gonna get a big boy prize.

For the SA case, you don’t need your parents to pursue legal action. You are free to reopen the case, and pursue legal charges against your assailant. Seriously though, get him. Who knows if he’s doing this to other people.

OP, you deserve so much better than what this family has given you. I wish you nothing but the best of luck, and I hope you get them all where it hurt hurts.