Why did pittypat not think that Rhett would be hung?

Pittypat did not think Rhett would be hung because she believed he had too much influence and connections to escape such a fate. Additionally, her optimistic view of Rhett's character led her to assume that the legal system would favor him. She also underestimated the severity of the situation and clung to a sense of hope that he would evade the consequences of his actions.