Weaver plays an adult with autism. She functions rather well and on her own terms in Wawa, Ontario. She lives alone in her own house, works in a supermarket stacking shelves and maintains contact with her adult daughter.
Weaver, who rigorously researched autism and adopted phrases as well as physical movements from autistic adults who mentored her, plays the character with a ferocity and lack of conscious ego. This is not a trick, flash performance. She makes her character absolutely alive.
The rules of conduct inside her house -- her way of maintaining order in the chaos of everyday life -- are authentic and never ridiculed in this sophisticated film, except by people who show their ignorance by doing so.
The movie's title refers to the fact that Weaver's character has a penchant for eating fresh snow.You can read the review here.