In general I like how the game goes, however I don't like that about who catches Isabel, who catches Rose, who Isabel talks with and not presenting Rose and Isabel's conversation since I don't like being in the shadows and not knowing what happens, but there is also the other part that that is what creates suspense and generates a plus to the game; Now it's okay to do it like this, but if you're going to do it like this, I would recommend not showing the scene of the girls talking and playing in the living room and not showing their thoughts and so on, since that should follow the pattern that they keep us in the dark about things, this would be in my personal opinion, however it is your game and you know how you do it, although I have a feeling that they will show all that later.
Finally, according to me, I already have a theory and I have analyzed who the anonymous could be, the girl who talks to Isabel and the one who catches them and so on, I think that playing VN so much has given me a deeper analysis of these types of situations both in games, VN, movies and so on, hahaha
Good luck with the game and I hope they don't leave it, because lately several games that looked good have been abandoned.