Not clear whether the mixed race parents she spoke about were her biological parents or her adoption parents. It would have been a more complete and accurate life story to know the relations between those parenting groups. Also missing was the vast turmoil that dominated her early life in regard to who was guiding her, and with the substratum of economic ramifications. Not discussed and certainly an important part of her story.
If it wasn't constantly conveyed that she has some African genetics (i.e. she's black), at first I thought that she was Mediterranean or perhaps near/middle East or even India subcontinent. So the biracial emphasis seemed almost displaced, and also that she was told by her mother to always check the "black" box unless it was for advantages in economic and other affirmative action assistances.
Again, strange that even though she was promoted as a trail blazer for women of color in ballet, it was only towards the end that there was acknowledgment of such women present in that art from half a century and more previously (especially in the more accepting Europe). Most egregious was the lack of mention of Maria Tallchief who went to even greater ballet acclaim world wide despite an even more discriminatory cultural, political and economic milieu for Native peoples than was faced by African-Americans (an easy history check if doubted). Making me question the accuracy of "A Ballerina's Tale" were two comments concerning Balanchine where he was intimated to be a primary source of American ballet's supposed obsession with overly white ballerinas, yet guess who he championed - Maria Tallchief.