He put the recovery code (only copy) under his daughter‘s pillow and then forgot about that? How stupid is that?

A big folder with emergency/in case of death information (including Bitcoin recovery codes, but also, oh maybe banking information, which insurance companies you‘ve used, a will, medical directives etc., would have been a better idea.

And then put it where you keep big folders and people will actually find it when they‘re looking for it while in distress.

„My father died, he has this shelve with document folders, but let‘s ignore that and search my room“ said nobody ever.