chunk: Although Ralph dotes on Undine, his finances do not permit the extravagant lifestyle Undine desires, and she feels that her in-laws scorn her. When she becomes pregnant, she is disconsolate; and she neglects her son, Paul, after he is born. Alone in Europe, Undine begins an affair with the nouveau riche Peter Van Degen, who is married to Ralph's cousin, Clare. She then divorces Ralph in the hope of marrying Peter, but this does not work out: Peter seems to want nothing more to do with Undine, and Clare will not grant him a divorce anyway. As a divorcee, Undine loses her high position in society, and spends a few years living in North Dakota, New York, and Paris, scheming to scramble up the social ladder again.