Final answer:
La Llorona is a significant character in the novel who represents loss, grief, and consequences. She adds mystery and supernatural elements to the story.
Step-by-step explanation:
La Llorona is a significant character in the novel Summer of the Mariposas. She represents a tragic figure from Latin American folklore, often known as the weeping woman. In the novel, La Llorona serves as a symbol of loss, grief, and the consequences of one's actions. Her presence adds an element of mystery and supernatural to the story, reflecting the themes of family, sisterhood, and personal growth.