Spaces and who owns them
The boys' locker room is the book's engine: a space strictly coded male, entered by a girl who has no business there. Her trespass is small, almost comic, and enormous, because every room she's ever occupied came with instructions. The girls' locker room, with its mirrors and chatter, is the space she was assigned; the boys' is the space she chose. The book keeps asking what a body is allowed to see and where it is allowed to stand. When she finally claims the page as her room, the theme resolves: the point is not to break into their space but to build one that answers to you.
Characters:The girl