I think the first one is totally amazing, and they can work as Grad shots. (Almost) Every girl wants to feel like a model sometime, and those are really fashion-y. I would try and clone out the lights on the floor in #1.
#2: Not crazy about the composition, my eye keeps going to the blue pole behind her. I think it would be better as a b&w image.
#3: My least favorite from the batch, too much environment vs subject.
#4: While taking this photo, I would have composed the glass
out, it's not even a good complete reflection. Plus, she has a pole coming/going in/through her head.
She's really gorgeous and should definitely consider modeling if she isn't in it, already.