What I think you are trying to describe by using the term "reverse racism" is race based discrimination, which does exist, is real and is hard to be on the other end of. However, racism (in it's actual definition) exists only when a marginalized group of people, who are oppressed, are discriminated against by a dominant group of people. In this country, black folks have been oppressed by white folks. Black people can discriminate against white people, but can not be racist because they do not enjoy, in mass, the privileges of being in the dominant group. They do not enjoy, as a statistical group, the social power, economic power, judicial power, etc. that white people do. That is not to say that there are not oppressed, poor, white people, or that there are not powerful, wealthy, black people. I am saying that, sociologically speaking, and statistically, black people are marginalized by society and white people are not. Racism, and racial oppression, are transfered through generations. Much of this has to do with generational economic privilege/disadvantage.
That said, I have lived in poor, mostly black/hispanic/ urban areas as the "white girl". No, it doesn't feel great to be, "the white girl". But, I understand why those dynamics exist. Understanding that made it easier for me to not resent and thus, I was able to let go of my baggage - make an effort and just get to know my neighbors. I was out of the house, traveling, making my own decisions during this period of my life. I was not a teenager going to public school. I think it is harder for teens to break down the misnomer "I am color blind" and become someone who does see color, does see racism (in all of its horrendous glory), does see oppression, does see class, and thus, is able to see people in a social context as well as a personal one. Having an awareness and education of real history, and its affects on our present system/culture, is helpful. But anyway.
As recently as 1863/1865 slavery was still legal. We are talking about a couple of generations ago, really. Racism doesn't just disappear, like magic, the moment black men are allowed to vote (1870) or that segregation becomes illegal (1964/68). We are talking, forty years ago, a black person and white person used separate fountains. Come on folks, the shear cultural trauma (let alone the physical repercussions, i.e. class) of that does and will continue to affect our schools systems, jails, judicial system, class etc.
So. Is your daughter being discriminated against? Maybe. Are there reasons that our school systems are still racist? Yes. Does that affect all races? Yes. Is there reverse racism? No, the term is nonsense. Edit to add: I think you might help her by sympathizing and empathizing with her (it is hard to be one of the only X kids in any situation), helping her understand the reason why things are the way they are (together you might read the books "a people's history of the united states" and "Why are all the black kids sitting together in the cafeteria"). Continue being a good ear and being trustworthy and then help her get a better education about racial dynamics. Our school systems don't do a very good job with this - I think. The knowledge will empower her and hopefully will help her to not feel alone.