That's a really nice description of your mystery book (and you may know I love mystery books! https://www.markslutsky.com/archive/something-good-27-a-lost-childrens-story/ )
Sort of sounds like Joan Aiken, except I don't know about the faeries. Also, a couple of The Dark Is Rising books (Under Stone, Over Sea and Greenwitch) both take place on the Cornish coast. But no boarding school, and again, no faeries -- not exactly. But maybe give those a look?
I've asked some friends to come up with ideas too, and I'll post them here if anything comes up!
That's a really nice description of your mystery book (and you may know I love mystery books! https://www.markslutsky.com/archive/something-good-27-a-lost-childrens-story/ )
Sort of sounds like Joan Aiken, except I don't know about the faeries. Also, a couple of The Dark Is Rising books (Under Stone, Over Sea and Greenwitch) both take place on the Cornish coast. But no boarding school, and again, no faeries -- not exactly. But maybe give those a look?
I've asked some friends to come up with ideas too, and I'll post them here if anything comes up!