ONCE THERE WAS a little bug-faced toddler in a pink snowsuit, wearing a black knit cap with a Sonic Youth logo across the front. (Her dad was clearly a Gen Xer with a well-honed sense of irony.) One day she was 7, in tap shoes onstage at the Masonic Temple in Allentown, Pennsylvania, looking worriedly out into the audience until I slid into my seat, and she gave me an enormous smile. Then she was 15, running across a vast green lawn with a field hockey stick in her hands, having scored her first-ever goal. In another instant she was in my rearview mirror, waving goodbye, a tear running down her face as I pulled out of the parking lot of her college campus.