Color balance advice please

I don't think the WB is off much at all. As previously mentioned, there is some cool light coming in from the side/back. I did a quick levels adjustment to darken the midtones, and you could leave it at that. But I also sampled the color on her cheek camera left, and then painted in Color mode on the other side to warm it up a bit. A little skin-softening in Portraiture finiished this out.