This was no fluke. She did it several times, the above video being about the 4th. Before now she would usually only wave at herself in the mirror. I think she finally figured out what it meant.
Along with this adorable new trick her first tooth finally broke the surface, she started crawling (about 3 weeks ago) and she pulls herself to a standing position anywhere she possibly can (about 1 week ago).
It's hard to believe her first birthday is only 1 month & 5 days away. She has continued to develop & grow normally (she weighs about 14.5 lbs), stay healthy, and make everyone who sees her smile. She has brought joy to our lives that we never knew existed. What a blessing it has been to have such a beautiful, happy, healthy baby despite her rough beginning. She truly is a special daughter of God.