" Then Ivan and Marya Morevna built a pyre and burned Koschei until he was ash. And then they lived happily, visiting each of Ivan’s sisters and their bird-husbands, all of whom declared that Ivan did the right thing to risk so much for a woman as beautiful and fierce as Marya Morevna.” “If she was so fierce, how come she didn’t just save herself?” Tana asked. "

― Holly Black , The Coldest Girl in Coldtown