I think its the outfit that wrong. If she was kitted out in a worker gear it would be better instantly. Not really sure, from a viewers perspective, why an office girl would be climbing between metal cables...
This is the only comment so far that I agree with.
"Underexposed" is subjective. Light and shadow and exposure values create a mood, and the mood of these images is obviously meant to be dark. Thus, to me, it's not "underexposed". The exposure value is correct to create the intended mood.
The poses aren't bad, horrible, terrible, "looking like she's squatting to pee", etc. to my perception. For someone working with that hardware and those cables, those kinds of poses are appropriate. The reason they don't work is...
The clothing. It's not work clothing, and so it doesn't fit in with the theme of the shoot, which is working with rusty hardware and cables. It could possibly work if there was some way to pictorially tell the story of WHY she's in THOSE clothes, in THAT place, engaging in THAT activity that makes sense to the viewer. Without that story-telling element however, I think she needs to be in work clothes, and probably with some strategically placed dirt or grease on her clothing, hands and face to make this really work.
Beautiful model, btw. Reminds me of Kari Byron of Mythbusters.