Oh boy. Can you legally leave the home? Sure. Can your mom require you to pay all your own bills now? sure. You really want to escalate this to a...

Same question, same answers.................................

It's a scam, and you fell for it. Don't send them anything. Block them.

Depends on the circumstances and all the facts you didn't (and shouldn't) post on line.

Yes you can sue 7-11.....................

Yes if you don't pay for the car they can repo it.

Yes prosecutors can bring charges................

Same question, same answer..............................

Do not post admissions on the Internet. Shut up and lawyer up.

I am not sure what any of us can tell you besides hire private counsel or speak to your PD.