Earlier quoted context omitted.
Pointing out that someone is white is about race and I don’t see why we should bring race into this. Are Nike basketball sponsorship deals targeted at black people or are they targeted at the most successful and famous basketball players regardless of their skin pigmentation?
Some people have nothing interesting or valuable to say, they just always talk about race. Somehow everything becomes about race, even things which have nothing to do with race.
It was an upsetting, almost cartoonish detail in the story, but it might be helpful to you here. On a rational level she should not be afraid of sausage. But years of abuse meant that she was. It's sad, but understandable. It's just how trauma and conditioning work.
One doesn't need to be a victim of racism to empathise with the fact that it has a profound and traumatising impact on people. Maybe you know something about OP that I don't, but if you are right, and there's no reason for them to be talking about race in this instance, it's unlikely you'll persuade them with incredulity that they hold the point of view they do.