That was one of the most fundamental and sacred duties good friends and families performed for one another! They tended the flame of memory, so no one’s death meant an immediate vanishment from the world; in some sense the deceased would live on after their passing, at least as long as those who loved them lived. Such memories were an essential weapon against the chaos of life and death, a way to ensure some continuity from generation to generation, an order of endorsement and meaning.
That is, Jack thought, the way of life. The horror changes us, because we can never forget. Cursed with memory. It starts when we're old enough to know what death is and realize that sooner or later we'll lose everyone we love. We're never the same. But somehow we're all right. We go on.
If she possessed any memory whatsoever of the days when she'd been whole, her shattered recollections were scattered across the darkscape of her mind in fragments so minuscule that she could no more easily piece them together than she could gather from the beach all the tiny chips of broken seashells, worn to polished flakes by ages of relentless tides, and reassemble them into their original architectures.