“the ghost of gertrude robinson haunting the archives judging every decision jon makes” is a very inspired idea especially if it includes gertrude mildly inconveniencing jonah as much as possible, but have you also considered the following: the ghost of adelard dekker haunting the archives screaming crying throwing up in frustration at jon destroying that table.
OR. even better. they’re both haunting the archives and usually gertrude’s the one getting pissed off at how stupid jon is and adelard, who was never really a part of the institute, has the general attitude of “not my circus, not my clowns” until jon sets the not!them free, and then he’s just like. gg im gonna be real with you i am seconds away from murdering your successor