A former jail nurse at the Franklin County Detention Center has pleaded guilty to perjury in federal court for lying under oath about medical care she claimed to provide to an inmate who died in custody in 2019.Sabina Trivette, who worked for Southern Health Partners, admitted she falsely testified during a civil lawsuit that she had performed medical evaluations on 21-year-old Dylan Stratton the day before his death at the Franklin County Deten…