Joyce Draper is a prison therapist assigned to domestic abuser and child killer Jacob Lowenstein, continuing after his release. She was horrified the child of his fiancé Sheryl had a broken arm, and Draper feared Lowenstein again was back to his old habits of child abuse.
Draper tracked Lowenstein to the school he dropped Sheryl’s kids off at and ran over Lowenstein with her car before speeding off. Lowenstein lost his leg, then died due to his injuries. Draper was taken to trial, then acquittal on grounds on reasonable doubt. (L&O: “Fixed”)