^ Well, I was trying to give the girl the benefit of the doubt. If she picked up her anti-white sentiment at school then that likely means she was more cognizant of it's meaning and application than I gave her credit for.
I figured that the girl likely overheard her parents tell relatives that they enjoyed that there were no white people around in Africa. The girl, I surmised, then repeated the phrase without fully appreciating it.
If, however, she picked up the anti-white sentiment at school instead of from her parents then that likely means that she went to Africa, noticed no white people, and concluded that was superior on her own accord.
Further, that level of cognizance on race issues would also suggest that she was saying these anti-white things to a white person with greater awareness than I gave her credit for.
You're right, though, I don't know for sure where she picked up her anti-white feelings, I just know she has them and feels exceptionally comfortable directing them at white people at a young age. From my experience, that sentiment is more common in native born African-Americans than it is in African immigrants so that does support your possible explanation.
In any event, I see campus activism and maybe even a potential hoax in her future.