First I cut out Abby using the Magnetic Lasso and pasted it to a new layer on 'normal' setting. Then I went back to the first layer and colourised the background (seen as we don't know what colour Karen has, you can just pick one
Then from the second layer with just Abby, I cut out the eyes, the nose and Abby's tag and pasted each of them to their own layers (and named them to help me later).
I then went to hue/saturation and matched the colour to that of Abby's other pics. (For this I opened one in photoshop and used the eyedropper tool to select the best 'all-over' colour, once you click colourise in photoshop, it automatically goes to your selected colour).
I then chose the more grey colour on Abby's pic and did the same on a second layer, setting it to screen at low opacity.
I then 'painted' on her colours using one layer for the greys and another for the browns. I used guassian blur to make them look less harsh and set them to colour style.
I then used hue/saturation --> colourise for her eyes and made the layer style colour, and made a copy of that set on soft light and lowered the opacity until it looked right. I then did the same with her tags and again with her nose (only I didn't make a second layer of her nose as it would look too bright)