The experimentation with colour post-processing continue.
In the first one here, I created two luminance masks, and applied a green and pink layers, the green masked to the shadows, the pinks to the highlights. I then tried to tone afterward, and I don't like the result much.
In this second one (which is really about the 5th version) I toned the photo first - an overall curves adjustment, then a dodge/burn layer and a high pass filter layer. I flattened those down, then made two luminance masks as above and applied them to a green and a creamy-pink layer. The result is much better - however there is still an overall loss of contrast in the image and I need to figure out the mechanics of Exclusion.