When Emily locks her self in the bedroom at night, Lilith tries to break down the door. When she stops, Emily is on the ground next to the closet. When Emily opens the closet, it is daylight outside. As Emily runs out of the house, it is night again.
As the sleeping Lilith is being carried downstairs towards the kitchen by her father, her head and arms are hanging down as he has his left arm under her back. In the next shot as his wife opens the kitchen door, his left arm is now around Lilith, holding her by the arm and her head is up on his chest. Then in the final shot as they move across the kitchen, her head and arms are hanging down again as in the first shot.
When social worker is driving home (at beginning of the movie) already in her subdivision, the car windows are all up then when she is parking the car in front of her house her window is down and in another angle of her getting out (continuous motion) it is up again.
At Emily's first visit to the Sullivans, after getting out of her car, she is seen from top window, standing on the walkway. On next shot, she crosses the grass to get to the walkway and then get to the door.
The insects attacking Douglas in the bathroom are said and believed to be Hornets. However their appearance is black and they look more like flies. Hornets would really be brown-and-yellow striped and with an appearance more akin to that of a wasp. Hence hornets are a species of wasp. Black hornets ( a species of Asian Giant Hornets), however do exist but they grow to be at least two inches long give or take and would not be able to succeed in flying out of Doug's ears and nose.
In the institutional dining room scene, you see an inmate eating peas one at a time using a metal knife and fork set. Shortly thereafter, Ed Sullivan stabs the man with a plastic fork. High risk facilities do not allow metal utensils, nor even regular plastic knives and forks, they use sporks (spoon - fork combination utensils with short tines). Otherwise, the result is they can be used as weapons, just as depicted here.