The Forgotten Beasts of Eld by Patricia A. McKillip
THE FORGOTTEN BEASTS OF ELD is a spellbinding tale of chilling sorcery, human complexities, and dynastic war. Sybel is just sixteen when she is given a baby to raise. Born and brought up on Eld Mountain, with only the fantastic creatures called there by wizardry as playmates, she knows nothing of humankind ...until the baby awakens emotions she never knew she had. And when Coren, the man who brought the baby to Sybel, returns to Eld, her serenity is shattered once again.