The Walking Dead: Exact Moment Each Person Became Infected

With Milton turned, Andrea had a brief window of opportunity to kill him with a tool he'd planted for her to escape. However, Milton hadn't counted on her inability to pick things up with her feet, and though she manages to kill him, she still gets bitten.

Found by Rick, Daryl and Michonne, she elects to kill herself rather than having one of them do it for her, and she dies off camera finally reconciled with her old group.