Correction to previous comment.
It appears that it might have been a bug with the version I downloaded previously as after I redownloaded the game, the key was there.
Yet I come forth with another possible question.
In "Map0061" there are some strings of dialogue between Elaine and Karolina that, after....* too much time * of experimenting around, and by that I mean years, I still haven't found out how to obtain. By "some specific strings" I mean the rather long discussion the two characters have about the status quo, where Elaine tells Karolina she sounds like their father.
How exactly do you obtain that piece of dialogue? I'd be very interested to find a solution to that, because it would mean I would truly have 100% completed the game, but who knows, maybe that wouldn't even be true, since as I mentioned in one of my other comments, from the tunnels you go through when looking for the floor tiles where the starving butlers escaped, one can see 2 adjiacent rooms, to the far-left and far-right of the tunnels, which to my knowledge cannot be accessed. Thank you for an amazing game, either way!