Savi, 14, her sister Sonali, 17 and their friend Rashmi, 17 were in a bus bound for Motihari, 450 km from Siliguri, West Bengal. It was Savi’s first trip outside the state and the girls were excited about it. Savi’s…

Savi, 14, her sister Sonali, 17 and their friend Rashmi, 17 were in a bus bound for Motihari, 450 km from Siliguri, West Bengal. It was Savi’s first trip outside the state and the girls were excited about it. Savi’s…