Good work here David. My only question is not for you but for her: why oh why does a girl as beautiful as that with stunning eyes think she is 'adorning' herself by sticking bits of metal through her lip? She doesn't need any of that and it spoils her look.
Anyway, back to the pictures, the one I like least of these three is actually the first one, I don't like the way she is standing. It works ok in the front shot (3rd pic) but not so well in the side on shot.
I wouldn't crop the 2nd one at all, it looks better showing the full length of her hair. I wonder if maybe you have lightened her eyes a tad too much but nevertheless they are absolutely stunning and I can see why you wanted to photograph her
If I am in any way critical of her as a model it would be that I think she has a much better upper torso and head/face than she does legs and butt, I would focus on waist up shots where she is much more photogenic in my opinion.
Great work
Rob