Hajiya Gana Mohammed, mother of Afisat Grah, a missing student of the Government Girls Science and Technical College, sits beside her daughter's books and clothes in her room in Dapchi, the northeastern state of Yobe, Nigeria, February 24, 2018. REUTERS/Afolabi Sotunde SEARCH "DAPCHI PARENTS" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES.