Chime, by Franny Billingsley. YA, set in an imaginary part of England around 1900, witches, spirits that haunt the marsh just outside the town where the story takes place, one of those stories that at times makes even the mundane seem magical. Picked it up because I didn't think I'd ever read it, but it turned out that I had, although there was a lot that I had forgotten. And I don't know how I could have forgotten it, because it is beautifully written and absolutely enchanting.
(If anyone is struggling with how to write something in first person viewpoint, they might want to read this book just to see an excellent example of how it can be done.)
Or just read it because you are looking for something lovely and strange.