Answer:
Finally, Corrie returns to the image of the blue sweater, which Nollie sent to her in Scheveningen. 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 at the close of the chapter.
The theme of "The Luster of Lost Things" is seeking out one's inner truth in the urban, alienated world. The hero of the book is a young boy, Walter Lavender, whose speech disorder has rendered him incapable of communicating with other people, and has resulted in many limitations that he imposed upon himself. He sets off to accomplish a mission of finding a lost book from his mother's shop. This journey will set him free and teach him many hidden truths about himself and the world.
I believe it’s the second one
