DALLAS — A Texas woman originally from Hall County was indicted Friday on charges that she sent threatening, ricin-laced letters to President Barack Obama and New York Mayor Michael Bloomberg in an attempt to frame her estranged husband. The federal indictment charges Shannon Richardson, 35, with two counts of mailing a threatening communication and one count of making a threat against the president of the United States. Richardson, an actress living in New Boston, Texas, but who grew up in South Hall and later lived in Jackson County, was arrested June 7.