(at around 1h 12 mins) When Cassie is lying next to Raven in the hospital, Raven's chest is alternately covered and uncovered between shots.
(at around 1h 7 mins) When Cassie visits the goth rave cathedral club for the second time, and has a violent scuffle with Matt in the car, she pushes him out of the car. He conveniently falls far enough away from the vehicle that she can close the very large car door then pull away without running over his body.
Cassie has a "midterm" in her college Philosophy course just 3wks after the car accident that had occurred the day before school began the semester. Unless the midterm word choice is a misnomer, or is being used generically, it should have just been called an exam, not an exam halfway through the course.
(at around 28 mins) A crewmember is reflected in a big mirror in Cassie's room.