Me being me, I found myself crying. Just seeing Nate respond to another child positively, to show interest in continuing an interaction, was amazing. And his cousin was LOVING it. At one point, my mom asked G what his favorite thing of the day was- meaning which Smithsonian exhibit of course, and he without hesitation replied "Nathan". Sob.
When the kids left, Nate stood in the window watching for a long time. He was still laughing. He kept turning back to me and grinning, it just melted my heart.