A salvadoran legend about a woman with long and tangled hair covering her face, slim body and long nails, with enormous breasts that hung up almost touching the ground, she appears in the roads, rivers and ravines especially to single and drunken men wandering late at night.

Originally called "Sihuehuet" (beautiful woman), she had a romance with the son of god Tlaloc, the god "Lucero de la Mañana" (Bright Star); and ended pregnant, betraying the sun god. Sihuehuet was a bad mother, she left her son to satisfy her lover. When Tlaloc discovered what was happening, cursed Sihuehuet calling her "Sihuanaba" (ugly woman). From that moment, she would be beautiful at first sight, but when men approach to her,, she would become a horrifying woman.

According to some villagers, Sihuanaba has been seen at night near the rivers of our country, washing clothes and always looking for her son "Cipitío", which was granted the eternal youth by the god Tlaloc as suffering.

According to the legend, every wandering man is a potential victim for Sihuanaba, however, she usually pursues conceited and seducer men. Sihuanaba appears to them in any water tank late at night, taking a shower or comb herself.

Some mention that Sihuanaba shows herself as a young beautiful woman to captivate her victims but once she have gained his confidence, she transforms herself into an ugly and grotesque woman, giving their victims the scare of their lives and making them running while she was keeps laughing large loud and beating her breasts in the stones of rivers, all this in the darkness of night.