Revealing mistake: Despite being bitterly cold outside, there is no breath steam/condensation from anyone. To really top it off, when hot soup is brought outside to warm the woman, no steam at all is radiating from the soup.
Continuity mistake: When Frances takes Helen to sleep in the car, he puts her in the back seat from the drivers side. In the morning the camera is looking at her through the the window of the door on which she appears to be leaning. Yet when she gets out of the car later in the scene, there is a canvas draped over the door way.