What do the skis come to symbolize for Miranda's family?

When it begins to snow heavily, Matt gets the skis out of the garage. On New Year's he makes a resolution to learn how to cross country ski so that he can go to town when needed. Miranda and Jonny join him, and soon the skis become a way for them to get some freedom. Skiing is also an activity on which they can focus, giving them something fun to help them enjoy life and have a reason to live. The skis, therefore, represent hope and freedom.