His sister was Malinalxochitl , a beautiful sorceress , who was also his rival .
Her offspring , Huitzilopochtli , learned of this plan while still in the womb , and before it was put into action , sprang from his mothers womb fully grown and fully armed and killed his sister Coyolxauhqui , together with many of his 400 brothers and sisters .
Her offspring , Huitzilopochtli , learned of this plan while still in the womb , and before it was put into action , sprang from his mothers womb fully grown and fully armed and killed his sister Coyolxauhqui , together with many of his 400 brothers and sisters .
Rewrite this sentence in a simpler manner: His sister was Malinalxochitl , a beautiful sorceress , who was also his rival . Output: