When about-to-be parents rush to the hospital for delivery full of the joy and terror, there is almost never the thought that when they leave their newborn will not be with them. They're unprepared for the heartbreak of an empty lap. But an infant born too sick or too soon to go home may remain behind in the neonatal intensive care unit for a few days or for months on end. This week, for example, Kamryn Ruth Abbott celebrated her third month of life at Memorial Hermann Memorial City Medical Center's NICU.