I like the idea that it takes place over several weeks.
I'd feel kind of disappointed if the whole game was meant to take place all in one night.>Of course I like to pretend she does it when we leave, because then she is truly alone again…
Yeah, that's what I think.
Maybe she lives with her parents (dropout, just graduated Japanese-equivalent of HS, vacation etc.), and just doesn't go out of her room during times in which she knows they'll cross paths. I.e. whenever the game is loaded.