THIAM NDIAGA PIERCING thorns and stones underfoot did not stop the young woman as she charged through thickets, baby strapped to her back, fleeing armed militants who had kidnapped her with dozens of others in northern Burkina Faso last week. Now back home in the town of Arbinda along with a few who also managed to escape, the 20-year-old, who asked to remain anonymous for fear over her safety, recounted the ordeal that started when unknown men fired gunshots and then closed in on her as she was scouring the bush for food. Burkina Faso authorities said about 50 women were…