Harrison had started out worried that Corrie would shoot Mary Rose because the woman was as crazy as everyone said she was, but by the time the one-sided conversation was finished, his concern had changed. Now he couldn't figure out why Corrie didn't shoot her just to shut her up.
Harrison initially felt anxious about the possibility of Corry shooting Mary Rose, given the rumors about Mary Rose's unstable nature. As he observed their interaction, he realized that his fears had shifted. Rather than worrying about Corry's potential actions, he was left puzzled by her restraint in not taking drastic measures against Mary Rose's incessant and irritating conversation.
This change in perspective highlights Harrison's growing frustration with Mary Rose's behavior and his surprise at Corry's calm demeanor. It underscores the tension between the characters, revealing a deeper dynamic in their interactions as the narrative unfolds.
