The Language of Sand by Ellen Block

Lexicographer Abigail Harker leaves behind a personal tragedy to move to Chapel Isle, North Carolina.  She becomes the caretaker of a non-functioning lighthouse full of secrets.  Along the way she meets a whole town of quirky folks, who help her come to terms with her life.  She helps solve the mystery of who is breaking in to the vaction homes of the rich, solves the mystery of the lighthouse and rejuvenates the yard and buildings she calls home.  She even survives a brush with a hurricane, finds romance and helps a wrongly accused friend extricate himself from false murder charges.  Not bad for a woman who came to get away from her problems and bad memories!