Did Mary Lincoln Suffer from Pernicious Anemia?

[RJNorton]

Any opinions? Is it Mary? I tried to find a photo also taken in 1863 for comparison. In Lloyd Ostendorf's book on Mary Lincoln photos, he lists the one on the right as having been taken in the fall of 1863.

So these two photos were taken roughly 6 months apart (if Ostendorf is accurate on the date).