Not my intention. I was just trying to make the reader read it as I heard and saw it. Keep in mind I'm from Louisville and the various underclasses from each ethnic group all have their own devolved dialogue of the English language whether it be black, or white.
I suppose, it just seemed like pointing out her race was unnecessary to the story. And why didn't you disclose the race of the trainer? It's just you've got a black person and then you are telling a story about eating fried chicken, it can come across as a bit racially offensive. I mean it's already offensive to fat people, so it's already got a fairly negative tone to it, so the jump to race isn't terribly hard to make.
I'm not trying to give you a hard time or anything, you don't seem like you are intentionally being offensive, I just thought the story sounded a bit odd.