Forbidden Magic: Book I of the Lantus Chronicles

Subena's people are dying. To obtain the crystals the álfar need to survive, she agrees to a treaty with the hated Gatslians. Their king has but one demand-Subena must wed his son, Prince Kamber. Subena vows the marriage will be in name only, but she is ill prepared for an attraction stronger than the ancient magic lying dormant in the land. Add to the chaotic mix a former suitor, a phantom lover, attempted murder, and an invasion by hostile troops, and Subena's world isn't what it used to ...