Corrected entry: They wouldn't have had Starbucks coffee shops in small towns in the 70's, but the family drives past one on their way to (or from, I don't remember) the restaurant.
Corrected entry: Isn't the house supposed to be at 112 L.I. not 412 L.I.? And the house structure is totally wrong.
Corrected entry: The shotgun was the weapon used to kill the family in the beginning, but the ghost of the girl has one hole in her head. A shotgun from that close it would shatter her skull, not leave a hole like a pistol or rifle would.