Put it at the moment the neighbor reacts, preceded by the door knocking sound to set up her arrival and followed by a vine boom for the aftermath in apartment and hallway edits.
About this sound
A very short clip built around the single Russian word 'Sosedka', meaning female neighbor, delivered as a quick call-out lasting about two and a half seconds. It lands funny and slightly exasperated, like being summoned or caught out by the woman next door in an apartment block moment.