Why did Madame Zeroni give Elya a piglet?

Madame Zeroni gave Elya a piglet as part of a deal to help him win the heart of a woman named Myra. She believed that raising the piglet would increase Elya's chances of impressing Myra's father, as a larger pig would bring more value. Additionally, Madame Zeroni wanted to ensure that Elya would fulfill his promise to carry her up the mountain to drink from the stream, as she had a personal stake in the outcome. Ultimately, this act set off a chain of events that led to Elya's misfortunes.