Every night, after I tucked her into bed, I would sing to her, a silly song, a made-up song, our song. "Stay little, stay little, little little stay, little stay little stay little." She would giggle, and I would smile. The next morning I would say: "Look at you. You grew. The song didn't work." I sang that song for years, and every time I finished, she would cross her heart and promise she wouldn't grow any more.