While many changes can occur in the physiology of the face, the bone structure changes very little. The much narrower nose, especially the bridge, of the older woman is one feature that is quite obviously different.
There is a very heavy dark ring around the irises of the youner woman's eyes completely absent in the irises of the older woman. This is much more apparent in the original photos, by the way. Funny that their "iris scanning technology" missed this very obvious feature.
While the mouths are very similar, the mouth of the youner girl is measurably wider. Mouths do not get narrower with age. (More pursed, perhaps.)
Also, the length of the chin of the older woman is much longer than that of the younger. (Notice the distance from the bottom edge of the bottom lip to the tip of the chin.) The chin of the older woman is also cleffed, but not the chin of the younger. This cleff could have developed with time, but it is unlikely.
A more subtle point is that the cheek bones of the younger woman are both higher and wider than those of the older woman.
There is also a mole on the right upper lip of the younger woman missing on the lip of the older woman. I doubt that she had it removed.
Oh well. It made good story. That's what the NGM is into these day, and pushing their environmental agenda, of course.
By the way, I did see the documentary, and still do not believe it.
Hank
So, I conclude that either she is for real, or else National Geographic is more corrupt than I could imagine.