This project almost didn't get off the ground artistically because it is loaded with so many inconsistencies and improbabilities. When the parents of 19-year-old Lili walk around like zombies, evade all attempts by the girl to learn her brother's whereabouts and generally bring the story to a halt, it's up to Melanie Laurent to inject as much life as she can into the plot. That she is so successful is a tribute to her great talent and charisma as a performer. The hospital scenes must have been especially difficult for her, but they work very well. I must say she looks very convincing as an anorexic. Aissa Maiga as Lili's friend and Julien Boisselier as her boyfriend also provide strong support (but Boisselier seems a bit too old for the part).
Philippe Lioret on the basis of the three films of his I have seen, seems to be a capable but hardly inspired director. He relies a lot on the actors to drive his pictures.