A lady bought me a new truck 10 months ago. Title is in my name. Now she wants the truck or she’s taking me to court. Can she do this?

I met a lady and we started dating. After a month I had car problems. She wanted to help. I looked at used cars. She said you don’t want some one else’s problem look at new cars. I told her repeatedly you don’t have to do this. She said she wants to help. Went car shopping on a Sunday. Found a great truck. We worked out a deal with the dealership. She tried to write a check. Dealership said they can’t take a check on Sunday. On Monday she went to her bank and got a cashiers check. The title is in my name, as we agreed that day. I drove the truck to work. We broke up 10 months ago now she wants the truck or cash for the entire amount or she’s taking me to court. She wants me to voluntarily turn over the truck by Friday or she said she’ll have it towed. She said this is in advise of her lawyer. what can I do?