unless you have praise, admiration, and only glowing opinion of her accomplishment, you ought not voice an opinion at all.
happiness with experience is all that matters. I personally don't find it as engaging nor can I relate to her accomplishment in the sense that it is not congruent with my culturally-shared experience of being on the AT. But you won't hear me saying that it didn't take a will of steel, training, stamina, and mental perseverance to accomplish. it is one heck of a feat! But, for me, for my opinion, it seems somewhat removed from the character of the appalachian trail. That is all. My opinion.
if you can't demarcate someone walking behind you carrying your snacks and water, sleeping in beds most nights, having a constant ride to the TH, and getting off the trail and having to buy, depackage, sort, and repack 4-8 days of food and leave town carrying it, tenting, etc, maybe it isn't worth trying to discuss with you. Having a winner team at your beck and call to help at any point along the way would certainly help one to maintain the mental fortitude and focus to continue the difficulty of miles ahead. Basically she only had to think about miles, most else was taken care of. A normal thru-backpacker has more to deal with in an average day in a lot of respects.
maybe someone can thru hike with no pack and pay a sherpa to carrying everything the whole way. just like anyone short-roped up everest is a regular messner!