Probably the same woman. You need to consider that the older woman has lost her teeth, so her jawline has lost some fullness due to that and age. I think even though she is looking up in one photo and down in the other, the nose shape is the same. The width of the nose is the same. You can see the start of the frown lines in the younger woman, that are more pronounced in the older one. The hair is parted in the same place and the hair line is the same in both photos (slightly off centre).
Although one is looking down and you can't see her eyes, I think the browline and pale eyebrows also point to it being the same woman.