What are the motifs in The Dead and the Gone by Susan Beth Pfeffer?

Courage is a recurring idea in the novel as courage is shown in many different ways. Briana, faithful to God and to her family, shows courage several times throughout the book. She is courageous when she leaves the family to live on the farm, knowing she is helping her family have enough food to survive. Once Briana returns home, ill, she is courageous each day, in that she continues to live, and be a part of the family, and to help, in spite of her debilitating illness. In the end, Briana has a vast amount of courage, in that dies peacefully, knowing she is free of concern. Whether or not Briana died purposefully, in an effort to save her siblings, is questionable, but regardless, Briana died with a great amount of courage.