The narrative follows a strikingly beautiful young woman whose charms bring admiration and trouble, as a close friend and narrator recounts her upbringing, school days, and uneasy relations with a neglectful stepfamily. It traces fashionable courtship, a prominent marriage, travels through European cities including presentations at court and Italian scenes, and episodes of flirtation, first love, and bereavement. Interspersed diary entries, letters, and reflections examine the social consequences of beauty, the costs of coquettishness, and the pressures of public life. The story concludes with the woman's later domestic struggles, illness and death, and the narrator's sober meditation on idealism, duty, and loss.