@ poita & ww12345 - Thanks! Shortcomings aside, I was surprised, but pleased, this had the most color-fullness depth thus far.
The correction at this stage is something of a compromise -- fox's mint-green shirt color area overlaps that of girl's white lace. The more the lace goes to neutral, the more the shirt moves away from green. Since the mint-green is a spike of color, it might be tolerable to keep a lesser strength of it, in it's narrow area, as long as surrounding areas are more on-color.
I'm trying to duplicate in Curves (for the R-G-B separations) what the paint program tools added. BTW, is that necessary for me to do, or can you use your similar-function tools on it?
In the meantime, I'll work up & post my previous step-by-step numbers in case those become helpful recreating it in your software.
P.S. I mis-numbered the pictures in my previous post, which are now rearranged to be in the correct sequence with the corresponding text. :)