Hi! Last time I saw you, you were pregnant, and you must have had the baby! Congratulations! I signaled back with a grimace and gesture at the phone to indicate that I was on an important call and couldn’t talk right now. After our run-in, Jill was still walking around in her version of reality in which my daughter was alive. Our wordless interlude had given me a glimpse into an alternate universe — the one I wished I lived in, in which I had a phone full of photos of my soon-to-be toddler. The one in which people’s faces light up when they run into me on the street.