My mother's advertising firm specialized in women's accessories. All day long, under the agitated and slightly vicious eye of Mathilde, she supervised photo shoots where crystal earrings glistened on drifts of fake holiday snow, and crocodile handbags-unattended, in the back seats of deserted limousines-glowed in coronas of celestial light. She was good at what she did; she preferred working behind the camera rather than in front of it; and I knew she got a kick out of seeing her work on subway posters and on billboards in Times Square. But despite the gloss and sparkle of the job (champagne breakfasts, gift bags from Bergdorf's) the hours were long and there was a hollowness at the heart of it that-I knew-made her sad.