So I hold up my arm and spin her around, making her laugh. I really get into it, losing myself to the beat of a Brooks & Dunn song. I shake my own ass, then she shakes hers, the two of us heaving with laughter when she breaks out an adorable version of the sprinkler—one hand behind her head, the other extended in front of her, moving in time to the music. I do the shopping cart, Ava letting out a loud yell of approval as I place invisible items in my invisible buggy. God, it feels good to laugh like this.