This is the second time I've seen this movie. The first time, I hadn't yet watched Gilmore Girls, so I didn't know who Alexis Bledel was. This time I watched it specifically to see her. I've also seen a number of movies with Saoirse Ronin since I saw this the first time and enjoyed her performance here as well. Plus in the meantime I have also watched Orphan Black, so it was a nice surprise to very briefly see a young Tatiana Maslany.
As far as the story and meaning of the film, your guess is as good as mine. In the trivia it said that the director was influenced by Quentin Tarantino, something that is quite obvious considering the violence, blood, and teenage characters who apparently have no morality or conscience whatsoever. Pulp Fiction and Thelma & Louise are also listed as influences. Several people have called the Violet character "psychotic." She may be a psychopath, but that is not the same as psychotic. As far as Daisy goes, if she was shooting blanks or not shooting at all, my question is, why did she get into this line of work in the first place? But the film does not lend itself to such questions. They are who they are and they do what they do. I'm not a big fan of James Gandolfini but his character is very sympathetic.
All I can say is, despite the violence, which was so over-the-top it was almost meaningless, I enjoyed the film both times I watched it. I think people will either love it or hate it. If you need a story that makes sense, has a beginning, middle, and end (hopefully happily ever after), then this is not the film for you. If you like something a little experimental, a little surreal, and a lot symbolic, give it a try.