When Mwanahamisi Abdallah’s mother announced plans to marry her off to a stranger, the 14-year-old Tanzanian girl burst into tears. She had no desire to marry—especially after learning the man already had three wives. Remembering advice from a teacher, she phoned authorities to intervene. They blocked the wedding and eventually delivered Mwanahamisi from her village in southeastern Lindi region to a girls’ shelter in Dar es Salaam.