I though all this time it was Prissy as in “Ah don’t know nuttin, Miss Scarlett”.
As you may recall, in the movie, when Prissy said she ‘didn’t know nuttin ‘bout birthin’ no babies.” Scarlet hauled back and slapped Prissy across her face. I can see both roles being reenacted here to some degree. Donna is not at all dumb, but she was working with someone (Hilary) who didn’t want to listen to anyone, and has an imperial attitude.