I hate being the first to comment but since no one has I'll add my opinion. Don't think that I am right just what I would like to see.
#1-4: I think all of them could have benefited from a little more DOF and focus on the eyes.
#1-4: Portrait orientation is your friend. I really don't care to see that much grass with the subject in the center of frame.
#1-4: Exposure is almost correct. Just a little more light and you're there.
#2: WB is too cool. Doesn't match the skin color of the other photos.
I think the expressions are wonderful and her comfort with you is evident.