When left to her own devices, she will consistently confuse and/or conflate carbs and fats. I think this is because she's from a generation that totally bought into the war on fat, and raised us accordingly. Fat is so evil in her mind that there is a subconscious revulsion to it.
I'm not sure older generations' assembly-level worldviews can be reprogrammed at this point. Carbs will be ubiquitous until younger folks become the predominant consumer power in the economy -- or unless someone actually influences the Boomers somehow, e.g., convinces Dr. Phil or Ellen DeGeneres or Gwyneth Paltrow or Matt Lauer or whoever to come out strongly against carbs.