No way to determine the date any of these were taken, or authenticate them.
Definitely showing signs of foot drop. (Which probably makes it easier to paint the toenails-- and several different polish jobs, so probably taken at different times.) But that's to be expected. Can somewhat be prevented with good care, booties to put the foot in anatomic position, blanket lifters, etc. Not a huge big deal, with her prognosis. No obvious heel ulcers, so that indicates pretty good care.
Her hydration and perfusion in her lower extremities is actually pretty good, for the shape she's in, IMO-- better than I expected. But she has a 13 year old heart, so maybe that's just the youth of the pump. (Esp as per Dr. Alan Shewmon's research.)
She has some mottling in the feet-- again, not a big deal, considering her condition. I wouldn't expect her peripheral circulation to be "perfect". Can see obvious atrophy in her hands and calves, and definite weight loss-- but not as much as I would have expected. About what Dr. Shewmon's research would have predicted.
Her eyes in the one pic actually look unnaturally protuberant thru the lids-- far more prominent than in the living pics of her, but maybe the lids have just retracted a bit, combined with loss of orbital fat. I suppose it's possible there was some photo editing/ enhancing. But maybe not.
Mostly, the pics show foot drop, and a comatose patient. And foot drop can happen within a few weeks, or over months. We have no way to "date" the pics.
There is nothing in the pics to me that indicates her situation is any different, or more "alive", than it was in December 2013. Just more debilitated/ atrophied over time.