After looking at
Shelby's take, it will be hard to improve upon that!
So, we tried a "less is more" approach. We switched to LAB and did some selective sharpening on the L channel. Then created an "Edge Mask" and used it on a duplicate blurred layer.
Added a Dodge/Burn layer and enhanced the lips and eyes while slightly dodging a few small wrinkles.
Also added a
Gradient Map Adjustment layer with tri-tones which uses 302102 as the darktone, B0A38B as the midtone and FFFCEF as the light tone. Played with the sliders to get the breaking points where we wanted them.
This is a great photo by the way.
[img=http://img408.imageshack.us/img408/3342/lisette25bp.th.jpg]