The Queen of Ebenezer by K. B. Hoyle

A magical realism story for teens, perfect for readers of A Monster Calls or Piranesi

When Beatrice wakes in a magical swamp called Ebenezer, she's met with the baffling wit and curious whims of the swamp's single other human inhabitant, the boy "king," Tom. But something is haunting Ebenezer, and Beatrice must solve the mystery of the swamp before a lurking terror devours them both.