How i can apology to her? without sounding so desperate?

I'm sorry you're hurting right now. But sometimes people just don't like to hear the negative things about themselves. She asked you your HONEST opinion and now she can't deal with it. If she's willing to throw away a friendship over an opinion, then she's not really a good friend to begin with. The beauty of friendship is to agree and disagree but at the end of the day, you're still there for one another. I personally wouldn't apologize for an opinion. Because that's all it is....a OPINION. It doesn't mean that she is racist at all. It's just your perception of what she said. Write down exactly how you perceived things and give it to her. Then give her a few days to cool off. Hope it works out for you.