The central conflict arises when the unconventional behavior of a young American woman in Europe clashes with the rigid social expectations of the expatriate community. Daisy Miller, a spirited and naive American, navigates the social landscapes of Switzerland and Italy while under the scrutiny of Frederick Winterbourne, a man deeply entrenched in European customs. Winterbourne struggles to reconcile Daisy's perceived impropriety with his own attraction to her, creating a tension that highlights the cultural divide between the New World and the Old. The narrative framework utilizes a third-person limited perspective, focusing primarily on Winterbourne's observations and internal moral dilemmas as he attempts to categorize Daisy's character.

Readers and critics frequently highlight Henry James's ability to capture the subtle friction between differing cultural values through his precise, observational prose. Discussion often centers on the ambiguity of Daisy Miller as a character, with many debating whether she represents a victim of social judgment or a symbol of reckless defiance. The pacing is noted for being deliberate, allowing the psychological development of the protagonists to take precedence over external plot events. Scholars often point to these novellas as foundational examples of James's mastery in depicting the transatlantic experience. The balance of sharp social commentary and tragic undertones ensures that the work remains a frequent subject of analysis regarding the evolution of the novel form.