Recall that the story in the book is ostensibly the story of Jimmie’s great-great-great-grandparents. As such, it’s an intriguing detail that the Bone Sparrow necklace had (and then lost) a coin, since Subhi has a coin that’s described similarly to the one in the story. Given this detail, it’s possible that Jimmie and Subhi have more in common than they realize. Subhi and Jimmie offer each other support and a listening ear, which helps Jimmie heal from her grief and Subhi patch things up with the rats.