Rock-a-bye baby

My little baby girl broke my heart tonight when she indeliberately showed me how neglected she is.

It was bedtime, and I had just put Jonathan in bed and placed Gracie in her crib. As usual, Jonathan began to cry at his door, "Mommy, I want to rock-a-bye baby..."

So, as usual, I opened the door to his room and let him out into the open loft area, which also serves as Gracie's "bedroom," where I sat in the rocking chair beside Gracie's crib and began to rock him and sing to him, "Rock-a-bye baby, on the treetop..."

I looked over at Gracie as I was singing and there she was, standing in her crib, rocking side to side in complete sync with the rocking chair, watching as I sang to Jonathan.

I laughed at the sight of it and stopped rocking, calling my husband to come watch.

As I started rocking again, she began to slowly sway and eventually synced up with the rocking chair.

After getting past the initial shock and humor of it, I realized that my poor overlooked second child had learned to mimic being rocked by her mommy!!

How sad!!! But still cute...in a sad way...

Really, what this says to me, once I think about it, is that I have two different children, who have two different personalities.
Gracie is quiet, independent, resourceful, self-reliant, strong, and determined.
Jonathan is charismatic, outspoken, loving, stubborn, and non-conforming.
Nature or Nurture?

Or is the question Baby or Preschooler?