What's the Name of That Book??? discussion

Maybe The Archived?

Jessica's suggestion of The Archived by Victoria Schwab looks promising.

"Mackenzie was just 11 when her Da passed along the heavy responsibility of being a "Keeper": one in charge of returning Histories to the Archive. A History is a sort of ghost, but more like a copy of a dead person's life. Librarians keep every History on a shelf, in a complex and rigid order. But every once in a while one slips (becomes restless and crazed) and escapes the orderly Archive into the chaos of the Narrows-a lightless series of corridors filled with doors. A Keeper's role is to return the Histories to the Archive lest they escape into the real world.
...she meets a strange-looking Goth guy named Wes who shocks her by confessing that he, too, is a Keeper, and she begins to bond with him."

I left Charitykb a comment on her profile asking if "The Archived" was her book.

Fantastic.