Melanie’s daughter just disappeared. She had become a heroin addict and Melanie and her family were trying to help. Her grandfather had taken her to a detox facility. “He dropped her off and saw her walk in,” Melanie remembers. “She walked in the doors, watched him leave and then she turned around and left.” Living in Las Vegas at the time, Melanie looked for her daughter morning, noon and night. “In my heart of hearts, I know she’s still there. I just think she’s so far into heroin that she...