The Library of Lost Souls, livre audio

It is a truth universally acknowledged that a robot in possession of a soul must be in want of a life partner.
Nell, Human-5014 and Second Librarian of the Athenaeum, has clung to that truth for twenty revolutions. The human extinction is in its last phases, and her desperate quest to find the recipient of her husband's soul has finally paid off. She has one request, one hope for reconnecting with the man she lost so long ago.