She didnt go to Harvard to study. She lied about her ancestry to be hired as part of the faculty that was holding a position for a woman of color.
Harvard didnt want the real deal as they believed her lies and didnt press her claims of ancestry.
She got a job, money, prestige, privileges, and victim-splaining rights about the oppression of Native Americans by the government. Instead of all that going to a real one, if went to a white lady willing to lie about.
She wants to use her DNA test that proves shes 99.9% white to say that it really means shes 00.1% Native American.