The game looks beautiful, amazing character design and funny Scooby doo reference!
I think that Grace should have different sprites for walking up and down since the direction of the characters affects interactions with objects. For example, I might walk right and try to interact, but I can't, so I press up, and it works.
There are some characters that you can't interact with, maybe you can add some generic text like "I don't want to bother them" or something like that if you don't want to add more dialogue.
When saving data you can see the sprite of Grace on top of the text.
When going upstairs, if you hold the up key you can just go in and out continuously.
There aren't many errors in the translation, I think the ones I saw were the "She gone" instead of "She's gone", the survivor instead of survivors, "you probably don't think i'll forget, huh?" should probably be "You didn't think I'd forget, did you?", and the "Opne" instead of "Open" (if this isn't a reference to something).
Only the pager has a description, I think all the other items should have it aswell.
Sometimes there's a weird visual glitch when progressing text were the portraits of the characters flicker.
It is hard to know the places that I can go, maybe add an arrow pointing at places where I change rooms? Or another visual solution.
This is even more of a problem for places that you can't go yet but after some interactions you can, there should be a message saying "I don't need to go there yet" or something like that.
The protagonist acts kind of strange, maybe show the player what she's thinking so it's easier to know what to do, throwing water at someone to make them go away it's something uncommon.
When you play as that other character you still hold Grace's items.
I got 3 endings out of the 4.
Great plot twist! I didn't expect it. Derek best character!
I loved that ending! You did an outstanding job with this game, this is a hidden gem for sure.
If you can, add more tags to your game to get more exposure, like the puzzle tag, the more the merrier.
You should customize your itchio profile to get more people interested, maybe add a background, a banner and a short description of the games you like to develop.
Good luck with your game dev journey!