PARK CITY, Utah (Court TV) — A woman convicted of using fentanyl to kill her husband for his life insurance money has filed an appeal as she continues to maintain her innocence. Kouri Richins cries as her brother speaks in court. (Court TV) Kouri Richins, 36, was sentenced in May to life in prison without parole plus at least six years after a jury found her guilty of murder, attempted murder and insurance fraud in the death of her husband, Eric…