I must admit I loved the movie, even though I had decided I wasn't going to like it.
It does touch upon some less solid souls, like the schoolmaster at one of the actresses' alma mater, who said that they did not want to be connected with the movie (duh...how would they have been unless they made that comment..).
Gay behaviour between cowboys? I think it's as much a reality in that community as any other.
Otherwise it's a really tragic story and also a work of fiction.