A Bristol Tennessee Woman Has Been Charged With Sexually Abusing A Teenage Boy Of Whom She Was Guardian. 27 Year Old Mariah Shaffer Is Charged With Sexually Battery By An Authority Figure Following A Year-Long Investigation By Kingsport Police. The Charge Stems From A November 14th Incident In Which Shaffer Is Accused Of Exposing Herself To The Boy And Groping Him. Shaffer Is Free On Bond, And Has A Hearing Set For December 8th.