Lost Sympathy for her
I liked the movie, especially the fact that I was tricked into thinking the first 30 minutes was the story's "real time". But better than half of the movie was about Anna's revenge so my original sympathy for her painful childhood faded as she went on and on and on with her quest to make her classmates atone for their behavior as juveniles. I mean, that was 20 years ago. You are a succesful famous artist now and probably doing better than many of them. Get over it !!!
Maybe if the tedious last 45 minutes were cut short my sympaythy for her would have stayed to the end.