Hi Glen

This is a strange one indeed...I agree with the others that the first photo is a fake, but I can't quite put my finger on what's been done. Could the son of your aunt send through another pic of the photo, this time the whole thing, and no colour changes or anything, just "as-is"? Might help us to work it out.
It does look as though the head is not proportional to the body and the hands also look quite big. having said that, the face and hands seem to match the later photo of your lady. The setting is exactly the same in both photos, except for the left-hand picture on the wall, the photo/vase on the table, and the chair. That in itself is unusual, because it seems to be the lady's home, and it was not common for photos to be taken in the home in those days (however I have some of my own family from the 1880s taken at their own home, so it was not impossible).
I would be very much surprised if the first photo is original to the 1880s/90s (which would fit with the dress) given the incredible clarity and crispness of contrast etc.
As I said though, if we could see the photo in its entirety, that would really help

Prue
P.S. What an amazing lady, to have lived all those years