Still, excellent stuff! Weird parallel-universe versions of stuff I know is so much my shit, and this nails the dreamlike quality I love about those perfectly.
The little ominous asides are also tantalizing in what they imply; a mystery with no solution is no less compelling.
Also, I remember teenage me having a lot of dreams about the broad strokes of Coraline's plot well before reading the book and seeing the movie (loved both, still do despite what a monster the book's author is, and how bratty movie!Coraline is as a character). Something about that story just has that effect on people, doesn't it? A premise simple enough that it feels instinctual to fill in the gaps long before you read the actual book.
Maybe that's why I grew up to love Changeling: The Lost enough that I based my sona (loosely) off that game's villains.
... I don't wanna know what it says about me that you can trace my sona's conceptual lineage back to the Beldam. XD