What part did Arnold's wife play in his fateful decision to betray his country as noted in the biography, Traitor: The Case of Benedict Arnold?

Peggy, Arnold's wife, was a Philadelphia belle whose attentions were courted by the British occupying forces in the American capital and later by the Continental officers who took over the city when the British withdrew. Peggy's need for attention and her penchant for material goods contributed to her husband's fateful decision to betray his country. Peggy is portrayed as a willing helpmate who schemed with her husband to outwit the Americans.