Looks fake to me. First impression: its put together by cut out pieces.
Her hands are very big too. But it looks like the same woman. The fingers on the old picture are stubby at the ends as they are on the newer one.
The angle of the chains around her neck is a good point, but one is hanging the way it should, and the other one could be held in place by the garment or she could be holding it?
The pictures(photos) around her do look the same. The top of her head is odd and looks as if it has been cut out. Her eyebrows are modern-looking on the old picture but she may have had strong eyebrows at that age. Her head and hands do look out of proportion to her body, the neck is wrong but then maybe it's her dess.
I can't put my finger on why it bothers me. The lighting is odd too. There is light shining on her skirt, low down, and the skirt is very clear like a modern picture, but her lap is in shade. I was trying to find clear shadows to pinpoint the light source but I cant see anything definite. Maybe the photograper played around with it.