IMO, we're comparing apples with oranges here.
-Judging from the photos, ED was in mountains, not hills.
-The trek up this particular mountain may have been substantially less strenuous than going up Ben Nevis; everything depends on the altitude of your starting point, whether there are switchbacks (hairpin bends), wind and other weather, slick surfaces, and terrain under foot.
-ED likely was prepared, but a big pack wouldn't be an indicator. Big packs are often symptoms of a novice: they can weigh you down dangerously, disable your legs, prevent you from moving quickly enough, get you stuck in snow, and generally mean you're carrying too much stuff.
- ED was not carrying a heavy pack in any of the photos. I can tell by the position of her back.
-ED has very expensive gear. That translates into "ultralight" and "compact". Her pack didn't need to weigh a lot (or be very large) to have all the right stuff.
-on no account would it be safe to go up that peak at that time of day, whether you were planning to find a cabin a couple of miles from there or go all the way back. None of it is safe, at this time of year, and in such an exposed environment; it's this idea that you should be "going outside your comfort zone" and "pushing your limits" that is very dangerous and might very well have put ED in harm's way.