What can I do if the person I borrowed the money from wants me to pay the full amount after giving her the car where I used her money?

I need a much more detailed and specific statement of facts and any documents you signed to give informed advice.

I would ignore her.

Did you prepare a written agreement? It does appear that you agreed to pay her back the money she loaned. However, you should get some credit for the use the lender got out of the vehicle that is worth the fair market rental value of the car.

I don't know what is the right answer. She did not buy the car, she helped you to buy it. Obviously she didn't need it. Now she has a car she doesn't want. You have two choices. Either do what she wants, or borrow money from a bank or some one else and pay her off.

Did you sign a note? Did you have a written contract with her? I cannot give you an answer without much more information. You should see an attorney.

There are a number of options. You could do what she asks. Had you borrowed from a commercial lender, and they repossessed the car based on your breach of the agreement, they would sell it at auction, and could get a judgment against you for the difference in what it sells for and what is owed. However, it is unlikely that they could collect the judgment from you if you do not voluntarily pay it. One option is to just ignore her request. Even if you are legally responsible for the difference in what it sells for and what you originally borrowed, she would have to sue you to get a judgment. However, since she repossessed the vehicle, If you were in compliance with your verbal agreement, she has breached the agreement, and you probably have no legal obligation to do anything further. Your rights and responsibilities in this matter depend on what was agreed upon, and who breached the agreement. However, ultimately, if you are liable, all she can get against you is a judgment.

Consult with a lawyer who handles contracts for specific legal assistance or you may file a complaint in your nearest small claims court.

This all depends on the contract that you signed. If there is no contract, you owe nothing.

I suppose either one of you could sue the other for breach of contract. Not clear from your statement of facts exactly what the contract was. You no longer have the car. I believe I would leaver her alone and let her do whatever she is going to do. Whatever you try to do may not make her happy. I believe it is her problem at this point.