Continuity mistake: After Sarah turns away from her mother and goes into the kitchen, the right side of her turtleneck sweater turns upwards in alternating views. (00:46:53 - 00:47:17)
Continuity mistake: The left side of the open file folder is underneath the pillow and propped against the arm of the couch. After Beth has all of her papers/file folders on her lap, the open file folder is magically back in place under the pillow. (00:04:22 - 00:05:50)
Continuity mistake: Sarah goes outside and sits on the third step below the deck landing. In the aerial view, Sarah sits on the fourth step down (and does not appear to actually sit on the step). (00:31:34 - 00:32:38)
