In my most humble opinion, you should be running for your life and praying that that sword does not relieve you of your limbs, not pondering why the witchy woman likes to show a little skin. But I digress. Back to the art; It IS AWESOME!
It was the artist's choice, not the character, on why they're showing skin. No man or woman that ends up fighting her would, in any logical sense, let some sexy skin distract them during combat. If anything, the naked skin will end up as being an emphasis point on where to strike. And judging by her feet, she'd probably trip and get herself killed.
when you put pk it makes me think of dot hack//gu any ways i love the line work and the simplistic shades you used to pull this off this one is getting faved ^^ also im assuming she has six eyes, face, sword, shield nothing will get past her XD