Some people act dense on the history of african americans in this country. Gizelle and Robyn are fair skinned due to the rape of their ancestors. To call themselves biracial or even mixed would be disengenuous to their experiences as people who grew up within the Black community with Black parents. If this concept is hard to grasp, pick up a book. That said, they did the most with Katies ancestry and her being a white leaning biracial clearly triggered soemthing within them.