The Bone Doll's Twin (Tamir triad)

King Erius's sister, Ariani, gives birth to twins, a boy and a girl. Iya knows what she must do. She must perform an abominable ceremony that will seal the fate of the newborns, joining them one to the other in an unbreakable supernatural bond. But one twin dies, and their mother commits suicide, the surviving child is drawn to a doll.