Hm. Can't say I like this too much. It feels very nudity for the sake of having nudity. I think it might be the pose in addition to her heels. Plus I don't think the backdrop matches the mood/tone of the model, or perhaps vice versa, the model doesn't match the mood/tone of the backdrop. I'm not against the whole nudity thing as I think the other photograph you took of her, WhatOnceWasIV, is stunning and really well shot, but -I dunno- Maybe it's just me.
Sam-a stunning image. You're figure is beyond belief and the pose is tense/dynamic/captivating. The composition against the dark ruins projects the skin and soft-hardness of the figure. Contrasts abound and the blue of the sky speaks of an escape. Well done!