Is there no end to racial division? The men and women behind mathematics including Isaac Newton were white; it's just the way it is. If she believes there are African Americans and Hispanics who have developed mathematical theories, then share those with us.
I don't know about you but I'm truly worried about what college kids are getting exposed to. If it were my child I'd either send him or her to a college like Hillsdale or Liberty University, or not send them to college at all because there's more harm in it than good.