The story of Wasila Umaru and her 35-year-old husband in 2014 is one of the most sordid cases of child marriage to have spurred out of Nigeria after the murder of 12-year-old Hauwa Abubakar by her husband in 1984. Although these incidents are separated by three decades, the circumstances are similar and both resulted in the death of a spouse. Both girls were from poor conservative Islamic families and had been forcefully married off by...