For the first edit, I cropped in closer. Then I adjusted the white balance in Adobe Camera Raw, then warmed up the temperature because she was looking kind of blue. I adjusted the levels to brighten and make the colours pop, and then I ran the Boost action at a low opacity to add a little more oomph, turning off the crispiness and zing layers. I ran an unsharp mask and then ran noiseware.
Black and White: