Factory Girl was a sad tale, yet I enjoyed it. I have read some critiques on Rotten Tomatoes and agree with some of the complaints of the movies, yet not all. Sure there were gaps and questions but sometimes I think telling life stories, particularly recent life stories, needs to be like that.
If you have any interest in Andy Warhol, or the musician (he who doesn't want to be named), or Edie Sedgewick, it would be interesting to watch.