When Rachel is having breakfast with her parents, you can see her plate is empty as her mother places the father's eggs on his plate. Rachel sits down at the table and there are eggs visible on her plate as well as buttered toast. A moment later, her mother brings her eggs in a skillet and the eggs that were on her plate a moment before are gone. Rachel's eggs disappeared as she was reaching for toast.
At 18 minutes in she is looking at a picture laying on the fireplace mantle. As she finishes looking at it, the picture is now laying up on its side.
When Rachel is preparing to do her architecture story, she is looking a newspaper clipping with a picture of the Sullivan House. The clipping is folded, but you can clearly see the headline of the story for the picture reads "Massacre at Fillmore." Later they act surprised to find the same unfolded clipping and read the story.
At 19 minutes in as she goes up the stairs, you can see a silhouette of a person in front of the door in the back of the room.