Nancy Guthrie abduction claims took a darker turn in Arizona this week as scrutiny fell on a string of alleged ransom messages, including one that reportedly said the missing 84 year old had 'gone to be with God.' Investigators have said from early on that Nancy did not leave home on her own. Police treated the Tucson property as a crime scene, later released doorbell footage of a masked suspect, and sent DNA for testing at the FBI lab in Quanti…