I'm worried about my girlfriend's racial fantasy
What sort of fantasy? Have you talked about it?
No, she always avoids talking about it when I bring it up.
Having fantasies is usually ok. It would be better if the two of you could communicate.
I know, but I feel like her fantasy makes her see me as inferior.
That's not necessarily true, and you won't know until you talk it out with her. Everyone has fantasies, and their fantasies don't necessarily reflect their beliefs.