I think it is highly unlikely Inchworm wandered for days, before finding her campsite. She had a phone and a whistle and would most likely have used both if she felt she was that lost.
Given that she was found just off a tote road, it is highly likely she didn’t turn when she was supposed to follow the AT, and then she kept walking on the tote road. If she was feeling unwell, she might have decided to make camp and then look for the trail in the morning when she was feeling better. If she accidentally followed the tote road, she may also have decided to make camp and then look for the trail in the morning. Hikers are taught to be a bit more discreet about their camping spots (in relation to roads) and she may well have followed that advice. Being found is a good thing, unless it is by people who are not very nice.
In her last photo, Inchworm looks happy and healthy.
It is quite possible she had a heart related medical event.
She was a hiker and had probably suffered falls during her hike. In that event, a blood clot could have dislodged and caused her to have a medical event (heart, brain, or lung related).
For either of these scenarios, people sometimes experience extreme weariness prior to the actual event because the heart is working too hard and the blockage does not allow the body to circulate more than "just enough" blood to keep the body going for a bit. Taking a wrong turn and then suddenly feeling like crap still leaves you able to think, but your reactions are slowed down. She made camp. She may have made it through one night, but it is highly unlikely she was still alive when searchers were dispatched to look for her. “Starvation and dehydration” is just language used to as a possible explanation when nothing to the contrary presents itself when the person is found in the woods.
It is highly probably Inchworm made camp and then passed in her sleep. May she R.I.P. I hope her family and friends are able to find peace.