Basically, here's all I did with Photoshop Elements 2:
1. Ran Dodge tool on the whites of her eyes to bring them out of the shadows. Her eyes are gorgeous, by the way.
2. Added a Hue/Saturation layer and adjusted saturation.
Master: +9
Cyans: +17
Blues: +8
3. Applied an unsharp mask to the background layer: 20/50/0.