She had once read in a book about consciousness that over the years, the human brain makes an AI version of your loved ones. The brain collects data, and within your brain, you host a virtual version of that person. Upon the person’s death, your brain still believes the virtual person exists, because, in a sense, the person still does. After a while, though, the memory fades, and each year, you are left with an increasingly diminished version of the AI you had made when the person was alive.