2012 CNN Hero Pushpa Basnet found her calling when she was still a student in social work in Nepal. While visiting a women's prison as an assignment for one of her classes, she felt a tug on her shawl and a little girl smiled at her from behind bars - a child living with her mother in prison. That image haunted Pushpa until she graduated, and she started a daycare in the morning for children aged 2-4. A few years later, she started a residential home for the older children - those older than 6 - so that they could go to school and live "normal" lives while visiting their mothers on holidays. "My mission is to make sure that no child grows up behind prison walls," she says.