After Alan visits the house, Pat is seen falling down the stairs. However, her blouse is in perfect condition with no tears in the back, as in all previous scenes. Also, stunt double is obviously a man from the girth of his back.
When Patricia is first locked into her room, she tries to open the door, jiggling the handle, and we see a slender gold bracelet on her right wrist. However, the next time she tries the door a few moments later, the bracelet is gone, and we find it is on the left wrist, where it remains.
When Patricia finally gets fed her oatmeal, the bowl she has is actually empty but she's pretending to eat from it.
Although there are no mirrors in the house, Patricia is somehow able to completely restyle her hair into a rather elaborate new hairdo.