When Sarah gets a text message from Josh about the surprise, the phone first reads September 6, 4:19pm. It then reads January 21, 1:15pm when she swipes to read the text. Once the text appears, the top clock time reads 1:15pm, while the text is time stamped November 17, 11:14pm - although she JUST received the text and it is still daylight out.
When young Dale is eating the cookies and the girl whose throat he had just slit is seated next to him face-down on the table, you can see her twitching her shoulders for a second or two as Dale's mother is begging for the girl to be healed.
(at around 51 mins) When Leslie walks Sarah into the bedroom and to the bed, through the bedroom doorway you can see a person's arm holding Buster(the dog)until his cue to enter the room behind the two women.