I think her skin in your rendition looks as if she were a corpse.
Eek! I hope not, but I will say that I was trying to achieve the powdered / alabaster look popular in that period.
Spurred by your comment, I looked into it a bit more. I went back to my tweaked version in PS and measured 11x11 average CMYK values at several points around her face. Here are some typical values that I see:
(21, 38, 48, 1) - in front of and below ear
(11, 19, 22, 1) - on cheek just below eye
(29, 49, 60, 6) - soft shadow on side of neck
The usual recommendation for good Caucasian skin tones is that the yellow should be 5%-10% higher than the magenta value, and cyan should be around one half of the average of m&y. Black should show in shadow areas only.
For my tweaked version, one half of the average of M and Y is usually very close to the C value that I actually measured. For the three places I measured, here are the calculated "appropriate" values followed by the actual value I measured:
21.5, 21
10.25, 11
27.25, 29
Obviously, even among Caucasians, and in different lighting situations, there will be substantial differences from "the book" recipe for good skin tones, but I think the calculations show I'm not too far off.
Another way to sorta check the colors is to look at paintings of powdered / alabaster skinned women from that period, e.g.,
http://shopvirtu.net/images/Products/DSCN0275.JPG
http://shopvirtu.net/images/Products/DSCN2201.JPG
http://shopvirtu.net/images/Products/DSCN6907.JPG
That being said, I probably wouldn't give any of my own (modern) images such pale skin. ;-)
Cheers,
Tom M
PS - BTW, I presume you are using a calibrated, decent monitor, not, for example, an uncalibrated / older laptop?