Di is a 12-year-old girl from the mist-shrouded mountains of northern Vietnam. She belongs to the Hmong, an ethnic minority in which girls get married at a very young age. This is often preceded by a controversial “bride-napping,” where the girl is abducted by her future husband on New Year’s Eve. Negotiations between the families follow. This also happened to Di’s sister and their mother, so it doesn’t seem strange that in preparation the women and girls discuss sex and married life without em...