Damn, this game is complex. The good way of complex, that makes you try stuff and then go back.
About itch.io policy changes: I’ve seen a few games working around this, by making the mother “landlady” and the sisters “room-mates” by default, but letting players pick the actual relationship. You’ll see this e.g. in Tamas’ Awakening and My Family Farm. It could be a good way to be able to commercialise your game here again, or at least for future projects.
Back into the game: Bella goes 180° from a pain to a sweetheart. I love it. I also love how all four have very distinct personalities and looks, and you still can hook up with other girls.