August brought with it a new easy-swallow scheme by a new self-improvement mentor. Luna Rojas had measured out her life with the likes of them – detoxes, spiritual awakenings, fad diets. She craved the promise of change.That first night, she filled the restaurant's three-compartment sink with water and tube ice. She sucked in her breath and plunged in face-first, submerging as much of her torso as she could, the water going up above her elbows.A blot expanded up the fabric of her rolled-up sleeve by capillary action. I watched the dark thing, idly, feeling that I should speak."How long do you