Before the start of Mass in a Mexican town last week, a wounded American bishop looked into a sea of teenage girls who had, he’d been told, been hurt in inhumane ways. Three thousand or so girls stood before him at Villa de Las Niñas in blue skirts, white blouses, bobby socks, and black saddle shoes. These were Mexico’s bullied ones from Guerrero, Oaxaca, Durango, Veracruz, Puebla, Jalisco…