When is Undine happiest in the novel, The Custom of the Country?

Undine is happiest when dominating an admiring crowd with her beauty, style, and power. Unfortunately, she has no interests beyond the pleasures of domination to keep her amused. Late in the novel, she learns that she and her French husband are not being invited to the best and most chic social gatherings primarily because people find her boring. People have found that she has nothing to talk about.