1 is my fav. 3 my least fav. I like putting the hair behind the shoulder on the shoulder which is closest to the camera to expose the neck and jaw line. Post work on face is a bit much for my taste......Have you tried darkening the rocks on number 2 to create a slight silhouette around subject? Might be nice.
My preference is the order you presented, with one being the best by far. This is very nice with a charming expression. 2 looks like she is trying to hold the walls apart to avoid being crushed. 3 is way over cooked.
#1 is very nice #2 is okay, I agree with darkening the rocks to make her stick out #3 makes her eyes look weird. I don't think you can fix that shot personally.
Excellent presentation, and here's my $0.02...
1) nice composition, lighting is a bit flat and skin feels overprocessed (compare skin on hand to skin on face...looks like two different photos...and people)
2) love this one 10/10
3) dead eyes...you need to get a reflector or some kind of light into her eyes, and it's a little too contrasty...shadows feel too crushed