chunk: Later in the poem we find her again in the company of Armida's ladies, but Erminia abandons her Muslim people and goes over to the Christian side. When Tancredi is dangerously wounded in combat, she heals him, cutting off her hair to bind his wounds (Canto 19).
  The witch Armida (modeled on Circe in Homer and the witch Alcina in Ariosto's epic) enters the Christian camp asking for their aid; her seductions divide the knights against each other and a group leaves with her, only to be transformed into animals by her magic (Canto 5).