(at around 59 mins) As the mother is kicked into the pit, a body flinches to brace itself for the impact of the mother falling on him.
(at around 38 mins) When Anna is helping the wife escape and Lucie intervenes with the mini sledge hammer. Anna is never hit with the hammer, yet after Lucie kills the wife, Anna crawls around on the floor as if she's hurt from the assault in which she was never hit.