Dimaline's writing is beautiful. Win is a soft goth girl living in a cemetery with a dad who is half functional. Her friends are dicks, but she hits it off with a ghost in the cemetery. The loneliness and grief are very front and center in this book, but it also has a lot of humor and tenderness. There are some dark moments, definitely read CW. I found Win very relatable, and remarkably resilient.
I have seen reviews mention fatphobia and I really don't agree that it's an issue in the book. There is a well-loved fat dog and one incident with children mocking a teacher, but there's no, like, arch-villain who's fat or any moral judgment of bodies.