My sources on this are impeccable. Warhol did two paintings, one for Ryan and one for Farrah. That was what Farrah wanted.
Yes, he gave it back to her "temporarily," but it was not as a fight. It was always going to go back to Ryan's house, but when she got sick he was more interested in being with her than he was in transporting a painting. The Texas people who are claiming it's part of her estate let to them are just plain WRONG.