Lady moves to island after breakup, legend of lady whose husband left after she had no baby, Cornish female author

- General fiction
- Not a series
- Saw in St Ives Bookseller shop on display in Summer 2022, think the book is 1-4 years old
- Pretty deep blueish front cover like waves
- Female author who did an interview in a Cornish/Devon/Dorset newspaper about her new book
- Blurb about single woman who moved to a remote village/island after a breakup and island has the legend of woman whose husband left after she couldn't conceive, locals still talk about legend and think woman is crazy, connection between the two female characters

Might be something by Susanna Kearsley.