Before I scrolled down to see other folks' attempts, my gut reaction was what Derrel showed. Of your original three I prefer the third. In that she is not centered (as she is in the other two), and you've left an appropriate amount of headroom and foreground (the stubble adds to the shot, helping #3 be stronger than #2, in which you've cropped out the foreground).
And Derrel is right that your latest crop (post #10) is drastically different from his even though the aspect ratios are the same. As D explained in post #6, your subject is wider in the frame than she is tall - but only if you include all her body. By cropping off her legs she occupies close to a square portion of the frame; there's no graphic impetus to go horizontal versus vertical or square. By going horizontal now, you have the left portion of the frame which is nothing but stubble - this really adds nothing to the shot since you've already got that information in the foreground. Had she been looking to her right (camera left) she would have been looking over that stubble and into the frame, so I wouldn't have minded as much leaving this dead space, but as she's looking directly at the camera the shot is stronger by cropping to include all of her body than to include the extra landscape.
By the way, I like the cooler editing. Good job revisiting that.