Story is about a bunch of people on a bus who wake up in the middle of the desert and can't recall who they are or how they got there. Interesting premise, but after the first 5 minutes, that is where it lost me.
Characters do a bunch of dumb stuff to create conflict and they find themselves trying to figure a way out of the situation(s). As for the little girl in this movie. She's there to just create conflict. That's her role. She does the dumbest stuff and starts to cry at the worst possible moments for the other characters. I could even tell that she was about to start crying (again) at certain critical moments to put the others in a bad situation yet again. I felt myself hoping that the story would take a dark turn and she would get eliminated early. I can't remember ever being in a position where I was hoping that a child character would meet his/her demise so that I wouldn't have to sit and watch him/her for the rest of a movie. That's how bad it was for me.
For those people who say that (blank) is the worst movie they've ever seen... I recommend you watch this movie and your list will change.