I'm assuming this person is not your spouse. Correct? Correct and never was
That depends. Who currently has possession of the car? Was there ever any discussion about ownership of the car beyond the single text message in question? If so, please describe that discussion. She has possession.
I can't imagine why that would be the case, and the exact wording could be important. In your original post you, you wrote that you "told her she could have it," but now you're saying that the message said, "the car is yours." I lost the phone with that text and cannot retrieve it. I know I specifaclly say the car is Your's
Why do you "feel like [you're not] obligated to" do these things? In your original post, you told us that your "name is the only one on the loan and insurance." So how do you figure you're not obligated on the loan (which, in addition to obligating you to make payments also certainly obligates you to maintain insurance)?