Book two. Trylle trilogy. Author: Amanda Hocking.

Wendy seems to be more connected to her rivals, the Vittra, from what she never imagined, and they try to convince her to fight with them. With a war about to burst, the only hope to save her people is the develop of her own power and get married with a powerful noble.
Divided by her heart dictations and the call of duty, Wendy must decide... and the mistake means the lost of everything she loves.