Tiffany wears pajamas with threadbare knees, loosely knotted tennis shoes two sizes too big, and a sweat shirt that she wipes her nose on because she's sick – and has been for several weeks. At 20 years old, she could be mistaken for a girl much younger, perhaps in junior high. A former heroin addict and mother of three, she has camped in the Dishman Hills Natural Area, off and on, for five years. "I'm ready for anything here," she said, perched on a rock eating a miniature chocolate bar. "I have spears in case an animal comes."