What is the argument being put forth in kaavya viswanathan unconscious copycat or plagiarist?

The argument in the Kaavya Viswanathan case is that she unconsciously plagiarized passages from other authors in her novel "How Opal Mehta Got Kissed, Got Wild, and Got a Life." Critics argue that the similarities were too extensive to be mere coincidence, leading to accusations of plagiarism and controversy surrounding her work. Viswanathan later admitted to unintentionally incorporating phrases and passages from other sources.