KARACHI: Muhammad Anwar Alvi was beside himself with joy when he was reunited with his sister, Shumaila, after 15 long years. Shumaila had ventured out of her home in the eastern city of Attock in 2010 to buy a snack from a nearby shop. She was found by her family in the southern port city of Karachi this week, hundreds of miles away, now aged 40. Shumaila, suffering from mental health challenges, was found by her family last week after relatives in Attock spotted a video posted online by the Punjab Safe City project on Facebook.