So I did a few things here (in Gimp). First I cropped the photo some, to bring the subject more into the center. Then I removed the catch light from her eyes.
Then I started adding layers. First I added a "touch of green" layer....which layers on multiple layers to create a light green effect. Then I add a sepia layer. These two together create a chocolate brown effect (one of my favorites). Then I pull up contrast and raise it some to the point where I like.
Jack