NEW YORK — A hotel maid who accuses ex-International Monetary Fund boss Dominique Strauss-Kahn of sexual assault sued him Monday, seeking unspecified damages as a result of what she calls the "violent and sadistic" attack in a room at the upscale Sofitel hotel.Lawyers for the maid, Guinean immigrant Nafissatou Diallo, wrote in the lawsuit that Strauss-Kahn "intentionally, brutally and violently sexually assaulted Ms.