Polly must spare her family. Maybe she thinks the family needs penances to become one. Polly acts normal as she pulls on the inmate's arm. Otherwise, she doesn't shoot him. In another world, Polly can't think deeply before shooting Tom. She shoots him to spare her father. In this way, she spares her father's life. Since the shot does not execute Tom, no one can consider her an executioner. In the event that Polly does not shoot the inmate, he will shoot Sheriff Campbell. She can ask for help from anyone with the end goal of sparing her father in mind, but her status as a father is no match for the flame. She can accompany someone to the prison with her. However, she goes alone to the correctional facility which decides to shoot effortlessly since there is no observer for her shooting. So, if she doesn't shoot the inmate's arm, she will lose her father. I agree that she has a choice because she wins to spare her father, and she is lucky because the projectile does not go to Tom.