what are some thing the blue sweater may have symbolized for corrie?

In prison, Corrie used the sweater for warmth and as a reminder of the world beyond her prison cell. When Betsie dies, Corrie feels the physical loss of her sister, but believes they will reunite in heaven. Although Corrie cannot keep the lice-ridden sweater, she converts the sweater into a memory of her time with Betsie. Now the bond between the sisters is spiritual rather than physical. Despite the tragedy of Betsie’s death, Corrie feels hopeful.