Helen Culver, the daughter of her family's chauffeur. The opening of the novel introduces Rosanna as a seemingly surrounded-by-pleasures child who is, in fact, quite isolated. Despite living in a grand home and having a lavish playhouse, her life is dull and lonely due to her grandmother's strict rules against mingling with other children. The narrative highlights Rosanna's unfulfilled desires for friendship and fun. When a new chauffeur, John Culver, arrives, Rosanna's life begins to change as she meets his daughter, Helen, who becomes a key figure in breaking the barriers of her lonely existence. This initial setup paves the way for themes of friendship, independence, and social class as Rosanna's naive yet earnest character embarks on a journey toward personal growth and the joys of companionship. (This is an automatically generated summary.)