There is no post-racial world and there will never be one.
My daughter is 18 now. I've noticed that her generation is much less fixated on skin color. It's just not the huge identifying characteristic that older generations discuss incessantly. The world changes.
That will change, just like the people my age(who are the same generation as your daughter btw) changed when they went to college.
Her non-white friends are also almost certainly fixated on race(and have been since they were small children because of their parents and the media), just like the non-white people in my social circles.
You do understand what is happening on college campuses now, right?