settle one's account

— Their conversations had become more fearful, even superstitious in the past month. They called her a ghost, or a demon, or a monster. She once found one of them crying in the graveyard after midnight, praying in Latin, begging forgiveness, and she gave it to him after putting the scissor blade through his aorta. She didn't see any point in being petty. They were all going to die, and that would settle their accounts with her.