The Trial For The Woman Accused Of Killing Another Woman In Florida While Dressed As A Clown Has Been Pushed Back. Sheila Keen-Warren Has Been In Jail For Over Three Years Waiting For Her First Degree Murder Trial. Keen-Warren Who Was The Former Owner Of The Purple Cow Restaurant In Kingsport Is Accused Of Killing Her Husband’s Then Wife Marlene Warren In 1990. Keen-Warren Was Arrested In Abingdon Virginia In 2017. Her Trial Was Originally Scheduled For September 8th. It Has Been Pushed Back To 2022