I didn't think so. I mean the MC appears to have been racist, but that doesn't make the writing racist. It is what happened and where your MC's mind went, and MC's aren't always (sheesh they shouldn't be) perfect. Is this what you meant?
lol I just 'liked' my own comment meaning to like yours.... I'm not that big headed! I swear! The fact she recognises her own failings suggests she's trying to do better.... I like that :) Very relatable (not in the racism sense... I mean in general)