If you’ve read Madame Bovary you’ll get the general gist of Liana. Just move the setting from semi-rural France to a small Caribbean island, and you’re all set.
I read (most of) this because I was interested in Martha Gellhorn, someone I had not heard of until the recent HBO movie ‘Hemingway and Gellhorn’. The writing is straight-forward, journalistic I suppose, in the way that Hemingway’s was. I think I would be more interested in her journalism than this novel.