Nancy is a stripper working at Kadie's Bar, a popular Basin City strip club populated by several key characters.
At the age of 11, Nancy is kidnapped by Ethan Roark Junior, a serial killer & rapist of young girls who has already claimed three victims.
Hartigan is charged with Junior's crimes and imprisoned for eight years, but Nancy remains true to her promise, writing him one letter per week.
Over the years, Nancy matures into a young woman, attempting to fall in love but unable to deny her true feelings for Hartigan.
She is eventually hired at Kadie's Bar, where she works as a stripper while attending law school in an attempt to become a lawyer.
Hartigan, believing Nancy has been captured by Senator Roark as a result of faked evidence, confesses to Junior's crimes and is immediately set free.
Upon arriving at Mimi's Motel, Nancy confesses her love to Hartigan and continues kissing him, although he strongly disapproves of her actions due to the distinct age gap between them, commenting that he's old enough to be her grandfather.
He plans to take Nancy to the Roark family's farmhouse, where he will finally achieve revenge by torturing, raping, and killing her.
Nancy briefly appears in a number of other Sin City stories, usually as a background character in Kadie's Bar.