What made Valli sad in her bus journey?

What made Valli sad in her bus journey?

Answer: While going by bus, Valli saw a playful cow on the road. When the driver blew the hom the cow started mnning faster. It made her laugh. But while she was returning, she saw that the cow was hit by a fast moving vehicle. The cow looked frightening with legs spread and eyes lifeless. It really disturbed Valli a lot. This incident really made Valli sad in her bus journey. It was a rude shock that the animal that she’d been laughing at a while ago, was lying in the stillness of death.