She was paid to clean up after the rich and powerful. Then she walked into Dominique Strauss-Kahn's room—and a global scandal. Now she tells her story. “Hello? Housekeeping.” The maid hovered in the suite’s large living room, just inside the entrance. The 32-year-old Guinean, an employee of the Sofitel hotel, had been told by a room-service waiter that room 2806 was now free for cleaning, “Hello? Housekeeping,” the maid called out again. No reply. The door to the bedroom, to her left, was open, and she could see part of the bed. She glanced around the living room for luggage,...