For about three months, Karen Kelly would drive around Enumclaw, Wash., after midnight looking for her 13-year-old daughter, Hollie. She carried Hollie’s photo with her, pulling over to show it to everyone she saw. Sometimes she got lucky. She learned that Hollie had talked a hotel manager into giving her a free room, or that she was camping out near the P.O. boxes in a post office, or that she’d settled into a tent in the bushes behind an industrial park. Hollie remained in Enumclaw, a town of less than 12,000 40 miles southeast of Seattle.