A federal grand jury has indicted a California state prison inmate and a Las Vegas woman on charges they conspired to extort and stalk a Washington state victim, according to the U.S. Attorney’s Office for the Eastern District of California. The two-count indictment, returned Thursday, charges D’Andre Davis, 39, formerly of Stockton, and Nicole Nowak, 31, of Las Vegas, Nevada, with conspiracy to extort money by means of threatening communication…