Nigeria: Boko Haram Vigilantes and the army have chased the Islamist militant group from the city into remote hills by Adam Higazi In September 2013 a 19-year-old woman escaped from the clutches of Boko Haram. They had held her captive for three months in Borno state’s Gwoza Hills, an extension of the Mandara Mountains bordering north-east Nigeria and Cameroon’s far north. Boko Haram, in control of some villages there, abducted the woman because she is a Christian. They spared her life only after she went through a forced conversion to Islam. Boko Haram claim to be fighting for a religious…