There is nothing in the game that suggests she is his wife. I left the relationship between father and the landlady open.
I already explained in my previous announcements and on Patreon why the rework was necessary, which you can read here: https://kmmgames.itch.io/one-week-away/devlog/1030833/bad-news-about-the-steam-d...
The rework was not for polishing but to be able to post my game on platforms like Steam, Itch, Patreon and so on.