I enjoyed the overlapping of scenes from Diana's life now vs that which happened surrounding the time of the shooting incident. However I felt that it was slightly too repetitive at times, there were too many scenes one had to watch two, three, even four times which made the chosen structure, which I don't oppose, slightly tedious.
It's one of those movies where you get out of the theater looking confused. Think about it as a mindfuck drama. It clearly wanted to be up there, but crashed miserably by mid-flight. I would have wanted to watch it again to understand it better, but it wouldn't even give me enough reasons to. Even my love for Evan Rachel Wood wasn't enough to talk me into it.