Sadie’s refusal to grieve openly and her plan to find her parents point to her intrepid hope. Despite being sheltered from the harsh realities of PACT removal and re-placement, Bird is much more cautious than Sadie, who has nothing left to lose. Bird’s memories of Sadie and the fact that he can still see bits of yarn on the tree indicate that missing people (like, perhaps, Bird’s mother) cannot be erased completely; traces always remain.