Does anyone remember what indie flick this was based on?

Rating: 9/10 (10 March 2007)

First off: I loved this move from top-to-bottom because of the great physicality of Emma Thompson, the realistic yet sizzling hotness of Maggie G., and the fantastic cinematography that always had something bright and interesting to show you. There are dozens of good reasons to love and respect this movie, and I won't respond to haters claiming otherwise. Show some class, IMDb!
ANYWAY, MY QUESTION IS... Does anyone remember a film with a very similar premise, released in the last 5 years, where a young female writer struggled to finish her novel about two brothers living in a boat out in the middle of the desert? The brothers were real, or became real for her, and were aware that they were being written about insomuch as one of them was supposed to kill the other. Some older man was also trying to help her write it, while at the same time falling for her.
I only saw the trailer. It looked small time, but it did appear on the Apple.com trailer page, and it looked pretty good to me. Does anyone know?