Daughter of a Muslim ruler of Toledo, she converted to Christianity and lived as an achoress and supposedly lived to be a hundred years old. Several legends have clustered around her. Go here to read about them. Her life is poorly documented, but the miracles attributed to her intercession after her death are well documented. Not unusual for a Medieval saint.
Or if confronted with an armed assailant, cops could be trained to simply shoot the gun out of their hands, just like