The Swan Kingdom by Zoe Marriott
This is the story of Alexandra, a plain and unobtrusive girl. Her father and mother are fair, compassionate rulers, and her mother possesses powerful healing abilities. Her three older brothers are kind, handsome and brilliant. But Alexandra, possesses a gift unlike any of her other family members, she has a connection with the very land and earth upon which she stands. Tragedy strikes the family when her mother is killed by a beast with chestnut fur. While questing for the beast so that he may exact his revenge, Alexandra's father becomes ensnared by the charms of a chestnut haired woman and unexpectedly remarries, much to the dismay of the four children. Sinister events are put into motion with the pronouncement of their father's marriage vows and sister and brothers are separated. Can Alexandra solve the mystery to her brothers' disappearance and save their lives? Will she be able to come out of the shadows that have seemed so comfortable until now?