Hawthorne. The Darkwood Chronicles, #2

In the shadowed land of the Dark Elves, a hero must risk losing everything. Prince Brannilon Luthinor and his mortal bride, Mara Geary, have returned to the Hawthorne Court, but despite winning the war against the Void, their own personal struggles are just beginning. Shards of the Void remain in the realm, and Bran must hunt them down, leaving Mara to face the poisonous intrigues of the court alone.
She soon discovers that the fate of Elfhame is far more precarious than she first believed. While she grapples with mastering her own magic, and the depth of her feelings for her enigmatic husband, Bran chases down the enemy - but his foe has grown more cunning than he ever imagined. As treacherous schemes and dire enemies close in around the couple, they must learn to trust the power of their magic and their hearts.
before both their worlds are lost forever. From USA Today bestselling author Anthea Sharp, a richly-imagined fantasy romance uniting an adventurous young woman and a fearsome Dark Elf warrior, in a magical tale full of love and adventure.