Rihanna?s missing back up dancer was found this Tuesday. Her name is Shirlene Quigley and Missy Elliot announced on her Twitter account, ?Thank u 4 all your prayers everyone and the police. Shirlene Quigley is safe and being treated in a disclosed location.? Quigley went missing after leaving her apartment this Saturday. She was filed as missing after the New York Police department found her cell phone and car.