I personally loved this movie. The only thing that I thought was off about it was the beginning.
(SPOILERS)
Young Jean didn't really seem to be upset after she was told her parents are dead. And for a 8 year old she was oddly saying things like an adult. But that was only the first few minutes. But over all I don't see why people didn't like this movie. Its music was really good as well. I'd give this movie a solid 8.6/10.