I like pictures like this. My feeling, however, is that *she* is too dark. The darkness of the background makes it otherwise very dramatic. It has a "strobist-style" look to it (see
http://strobist.blogspot.com ). And I think the color cast comes from her being too dark.
I have two suggestions. In camera, I would increase the power of the flash if you used it, or use an off-camera flash on just her if you did not. In post, I would create a new layer set to soft-light mode filled with neutral gray, and then brush with white over her face and clothes. Just playing with the small resolution file, an opacity of 30% on her face and 20% on her clothes seemed to look good.
EDIT: The post lightening seems to reduce the perceived color cast. And if you use a flash next time, I suggest a CTO (orange) gel at perhaps 1/4 power.