Check with your State's Secretary of State office. Individual State laws vary.
you and the party you cosigned have to talk to who you have the note with and they should be able to help you out
yes it can
Its half hers.
The person who's name is on the Title is the owner of the car.
The one who BORROWED the money and/or the on who COSIGNED the loan.
if the consigner files bankruptcy can the borrower take the car
You cannot sell the car as you do not own it. The only thing you can do is try and persuade the owner to sell the car.
yes you can get new car registration papers
Yes
Unfortunately if you cosigned a loan that means you were willing to pay the loan if the other signer defaults and if that happen they will go by any means to collect that money that you "cosigned/said" you would cover if the other person defaults. I would go after that person that you cosigned for if it has gone this far.
No, but if you pay the insurance, or if she's not on his, you can probably manage to get her into trouble for driving it.
Yes, some companies will insure your car without registration.