Trying finding this book since 2021— fiction about a frail girl
I’m trying to find a book I read around 2021. I don't remember the book genre but most certainly it's a psychological mystery.
About the book :-
There's this girl who lives in an enclosed space.
She has never seen the "outside world", She spends her time on the floor using a pencil to draw or do something specific.
There is a hole (likely in the ceiling or smg) that lets in rays of light, which she uses to help her with whatever she is doing on the floor.
She is described as being very frail and weak.
She is not allowed to leave the room freely.
She is only allowed out for a limited time specifically for baths & eating. Eventually, a guy joins her in that isolated space.
I have been trying to find the book for a very long time & I am not losing hope atp