How does Monica Sone struggle with the issue of identity in Nisei Daughter?

In the book, Nisei Daughter, Sone recounts her experiences as a young Nisei in Seattle in the years leading up to and shortly after the Japanese attack on Pearl Harbor in 1941. She chronicles the virtual loss of her rights as an American citizen and her family's forced relocation to an internment camp in Idaho.

Being born in the United States meant that a Nisei was an American citizen, but strict immigration laws prevented any them from becoming citizens until long after World War II. For years, Nisei found themselves torn between their Japanese ancestry and their thoroughly American lifestyles. They often had to serve as cultural or linguistic interpreters for their Issei parents, many of whom had not fully mastered the English language or American customs. Nisei were often criticized by Japanese nationals for abandoning their roots, yet they were unable to fully assimilate into the American mainstream thanks to widespread fear and prejudice toward the Japanese during the first half of the twentieth century.