This may be more impossible than usual, as it was a short story in a book of horror / suspense for teens, circa late 70’s / early 80’s. The specific story was about a girl who, upset over family conflict (I think) runs into the woods, where she meets a mysterious boy. Turns out he is from some underwater place, maybe a ghost… when she goes back to find him again the lake is gone, and when she calls for him, a spooky old woman asks “Who dares to call for the lights of Coralaine?” She chooses to leave to world to join her love in the haunted underwater town. Extra hard to find because no relation at all to Neil Gaiman’s Coraline but name of town similar.
Lost Classics of Teen Lit: Name That Book! 