For the first time, Johanna is purposely trying to win the Captain’s affection, behaving like a canny adult rather than a trusting child. This wrenching loss of innocence is unprecedented in the novel; even in the midst of the tense battle with Almay, Johanna didn’t display this adult consciousness of her precarious place in the world. She’s compelled to grow up not by facing danger but by forcibly adopting unfamiliar new norms.