Gwendolen

the long version

"Gwendolen Harleth, an exceptionally beautiful upper-class Englishwoman, is gambling boldly at a resort when she catches the eye of a handsome, pensive gentleman. His gaze unnerves her, and she loses her winnings. The next day, she learns that her widowed mother and younger sisters, for whom she is financially responsible, have lost their family's fortune. As a young woman in the 1860s with only her looks to serve her, Gwendolen's options are few, so when Henleigh Grandcourt, a wealthy aristocrat, proposes to her, she accepts, despite her discovery of an alarming secret about his past"--Amazon.com.