Other mistake: When Joe shoots the boy at the back of the house, he walks to the front at the same time a woman a few feet away walks toward him with a pram, and there are people in the background. There is no reaction from anyone to the obviously loud gun shot noise - his gun did not have a silencer on it.
Other mistake: Herman said, "I remember, at one point, this girl was running right towards the door, 50 feet away." The flashback view showed a girl maybe 10-15' from the door. (00:21:45)
Other mistake: When Emma Watson says "get wasted all the time", her British accent is very obvious, especially when she says "all."
Other mistake: After the daughter visited with her mother for the first time, she is reviewing the footage with the priests. No such camera angles were taken for what they reviewed, only an overhead room camera would have been available.
Other mistake: In the scene when Lindsey picks up her paycheck, the check is not signed.
Other mistake: The news anchor in the opening scene noticeably flubs her lines at one point.