Hey, I like the game it's fun :) A tad difficult for me as I have aphantasia (can't see images in my head) so memory games are hard. But your work on the plot, atmosphere and gameplay are nice, it's just a personal memory difficulty. Your visual and audio assets choice works well and I love your book drawing !
Maybe a small tip about level-building: I would have made the rooms a bit smaller. I prefer small areas where things are meaningful rather than big spaces that give an emptiness feeling (while your game is not empty at all). I don't really know why but it gives an odd feeling.