The Mabank teacher arrested for an alleged improper relationship with a student is back behind bars. The Henderson County Sheriff's Department arrested 28-year-old Tracy Gill yesterday and charged her with improper relations between educator and student and sexual assault of a child. Gill turned herself in Monday for the same charge in Kaufman County, but later bonded out of jail. Her bond is now set at $30,000.00 in Henderson County. The case has been handed over to both the Kaufman and Henderson County District Attorney's Office.