Phoebe Caulfield, though she is mentioned by name only once, is central to the story.

Phoebe makes Holden’s picture of childhood—of children romping through a field of rye—seem oversimplified, an idealized fantasy. Phoebe’s character challenges Holden’s view of the world: she is a child, but she does not fit into Holden’s romanticized vision of childlike innocence. Although she never explicitly states it, Phoebe seems to realize that Holden’s bitterness toward the rest of the world is really bitterness toward himself. She sees that he is a deeply sad, insecure young man who needs love and support. At the end of the book, when she shows up at the museum and demands to come with him, she seems not so much to need Holden as to understand that he needs her.