Reviewed by Linda C. Brinson WATCH ME DISAPPEAR. By Janelle Brown. Random House Audio. Read by Tavia Gilbert with Kaleo Griffith. 13 ½ hours; 11 CDs. $45. Also available in print from Spiegel & Grau. Billie Flanagan was a force of nature, almost larger than life. Everybody loved and admired her. Right? When Janelle Brown’s…