ALBUQUERQUE, N.M. — In the 1980s, a young woman from Arroyo Hondo was in the running to be the Taos Fiesta Queen. That summer, she visited the house of a renowned El Prado seamstress many times to get fitted for her elaborate, traditional outfit, always making sure to say “hi” to the woman’s 14-year-old son. She graduated from high school and moved to Albuquerque, where she attended the University of New Mexico. On June 22, 1988, 21-year-old Althea Oakeley was walking home from a party after getting into a disagreement with her boyfriend. It was around 8:15 when she crossed...