You can change your name with your marriage.

You’ll need to file a release and satisfaction with the court and have the court enter an order approving that.

If you’re willing to follow the rules, the state will give you new plates.

If your nephew won’t pay, you’ll need to pay.

You can move out when you turn 18. You’ll need your mother’s permission to keep driving the vehicle.

I’m not aware of any publicly available contempt forms.

Yes. She can call the police and report whatever she wants.

You’ll need to refer to your custody order. If you don’t have a court order, whoever claims first gets to claim him.

A protective order does not preclude him from working as a teacher or anywhere else.

No. You cannot reopen this criminal case.