So I bought another car from private party. The woman didn't have pink slip because car wasn't payed off but she said she sent in the payment already and will fedex it to me when she gets it. I went to DMV and I can't register the car bc I don't have pink slip. Is the car mine technically since I already paid her for it? I have bill of sales but thats it. No other paperwork from it. I am just thinking I should return it but I don't know if she will just say, "you already bought it".