Katherine has learned to say "change!"
Her hand sign isn't exactly the same as mine, but it's close enough that we both know what she means. I am enormously excited about this success, and suddenly want to teach her everything: Please. Thank you. More. Milk. Mommy. Daddy. Apple Crisp. And all those other signs you hear about.
The tricky part is, of course, that anything I teach her I must first master myself.
It's the story of my life.