Avarice. Divine Deities, #5

When you're the daughter of a god, you're not always in charge of your own fate. That's what Danai and her five sisters discover when their father, a minor god, has bartered their future to the god of the Underworld. Their foolish father lost his kingdom to a trickster goddess, and much like any buffoon, he has thrown good money after bad and decided to trade his daughters for his kingdom. Indeed, the girls' hands have been given in marriage to the princes of hell.
Danai's pledged to Sebastian, the Prince of Greed. Luckily, his greediness is for her love more than for material matters. Unluckily, Danai's stepmother has just decided to enter the Underworld. You know how it is with stepmothers. And Gia is the worst of them. With Riven still unconscious and an attempted murder of the heir to the throne of the Underworld, palace intrigue thickens with Gia's arrival.
Then it thickens even more when Danai becomes the favorite of her future mother-in-law and she's gifted with an immortal talent which can be her undoing if she isn't careful.