A spirited young heiress navigates the restrictive social expectations of 18th-century England while balancing her desire for independence against the pressure to secure a suitable marriage. Betsy Thoughtless, an orphan possessing both beauty and wealth, finds herself the center of attention among various suitors. She actively resists the traditional path of matrimony, choosing instead to enjoy the power her flirtations provide. Her refusal to conform to societal norms eventually leads to a disastrous union with a cruel husband, forcing her to confront the harsh realities of the gendered power dynamics of her era. The narrative utilizes a third-person perspective to observe the protagonist's growth and the consequences of her defiance.

Readers and critics frequently identify this work as a significant precursor to the modern novel, noting its early focus on the internal development of a female protagonist. Discussion often centers on Haywood's ability to balance lighthearted social satire with a serious critique of the limited agency afforded to women during the period. Many highlight the protagonist's evolution as a complex study of human fallibility rather than a simple moral lesson. Scholars emphasize the text's importance in the history of sexual politics and its role in challenging the conventions of the mid-18th-century literary landscape.