Of the three, my preference goes to the second one. This one is sure nice too, the angle is interesting, the intimacy too of a close up, and her sweet smile, all of this make this a very nice portrait, but the expression of surprise shown in No 2 is unique.
Wonderful close shot of a beautiful child. The angle of the face and the soft lighting complement your subject well. At first, I was wishing there was a little more light in her eyes, but feel that by down-playing the eyes (our normal focus of attention) the freckles are brought out.