Things seem to be getting more serious if von Linden is now the one supervising the narrator’s writing (that’s usually Engel or Thibaut’s job). Calling her Scheherazade is a reference to the
Thousand and One Nights, a collection of stories that a young woman tells a sultan to get him to delay killing her. The implication is that von Linden seems to know the narrator is trying to manipulate him into giving her more time—and he’s done playing along.