In Honduras, she is La Cigua. In Costa Rica and Nicaragua, she is La Cegua. In El Salvador, she is La Cihuatnawal. And in the old neighborhoods of Guatemala City, she is La Siguanaba. There, she has been seen wandering for centuries, through Ojo de Agua, along Santa Cecilia Avenue, near the Santa Cruz del Milagro church. Men—it was usually men—would spot her, often at night, while she was washing in the Las Vacas river or at one of the city’s numerous public tanks, where women would gather to do…