New developments in the heartbreaking case of Jahi McMath. The 13-year-old suffered severe complications after a tonsillectomy and her doctors declared her brain dead. Today a coroner issued a death certificate. But Jahi's family believes she is still alive, and they are doing everything they can to keep her on a ventilator. Now there is an agreement between Jahi's family and the hospital on what to do next. Dan Simon has the latest.