In the process , she sacrifices all of her own power to sing .
As it advances menacingly , Calwyn responds to the needs of the injured land and uses all of her chantment to heal it .
In the process , Calwyn sacrifices all of Calwyn 's own power to sing .
As it advances menacingly , Calwyn responds to the needs of the injured land and uses all of her chantment to heal it .