The Glittering Court by Richelle Mead
Both a school and a business venture, the Glittering Court is designed to transform impoverished girls into upper-class ladies capable of arranging powerful and wealthy marriages in the New World. Adelaide naturally excels in her training and even makes a few friends: the fiery former laundress Tamsin and the beautiful Sirminican refugee Mira. She manages to keep her true identity hidden from all but one: the intriguing Cedric Thorn, son of the wealthy proprietor of the Glittering Court. When Adelaide discovers that Cedric is hiding a dangerous secret of his own, together, they hatch a scheme to make the best of Adelaide's deception. Complications soon arise - first, as they cross the treacherous seas from Osfrid to Adoria, and later, when Adelaide catches the attention of a powerful governor. But no complication will prove quite as daunting as the potent attraction simmering between Adelaide and Cedric. An attraction that, if acted on, would scandalise the Glittering Court and make them both outcasts in wild, vastly unchafled lands.