Of Shapeshifters and Storms: Roanoak Book Two:

He is the heir of Roanoak. She is more than just a princess. A black dragon tests their powers. Nyla's Curse forces Dane Roanoak to push back the evil that plagues the land. No longer just the princess of Pharloe, Raven employs her ability to save all who live at Roanoak Castle, will she have engaged too great a foe? Dane's brothers and their Others must work together or fail to survive the attacks.