No, it is not racist. But so what if it is? Everything that existed at the time of slavery could be considered racist. SLAVES could be considered racist.
As for the “painful reminder” baloney — I don’t believe it for a New York minute. It is MADE UP. It is “pooah widdle us, feel sahwee foah us.” No. The answer is no.
She's looking to be butthurt, she has no ties or experience to any “civil war” hostilities or transgressions.