I’m no pro but I’m faster than her and have been running a long time, I find the “official” guidelines around carb loading and race fuelling completely unhinged. I think most would feel bloated and awful on the recommendation of carbs and fuel every half an hour might be ok if you’re an elite and running 10k in that time so it’s 4 gels in a marathon, but if you’re a slower runner and that’s a gel every two miles you’re just going to feel really sick