Ruth

I used to wonder if a mother could see the shift when her child became an adult. I wondered if it was clinical, like at the onset of puberty; or emotional, like the first time his heart was broken; or temporal, like the moment he said I do. I used to wonder if maybe it was a critical mass of life experiences—graduation, first job, first baby—that tipped the balance; if it was the sort of thing you noticed immediately when you saw it, like a port-wine stain of sudden gravitas, or if it crept up slowly, like age in a mirror. 
Now I know: adulthood is a line drawn in the sand. At some point, your child will be standing on the other side.