I finished reading this book last night. Coincidentally, I also read an article in the Guardian about a new genre called Up Lit www.theguardian.com/books/2018/mar/16/up-lit-eleanor-oliphant-gone-girl-fiction-kindness?CMP=Share_iOSApp_Other and I think this book fits that very well.
I've never been to Australia so the physical descriptions fascinated me. I'd never heard of black cockatoos so had to look those up, and they're beautiful. I also thought the communication difficulties were well-described, especially in light of how the UK almost ground to a halt with just a bit of snow recently!
The book isn't really about a book club, it was a device for holding together the plot. My copy has a list at the back of the books studied and why the author chose them, which was interesting.
Rita's story was the one which most gripped me and seemed most probable. Kate seemed a bit dappy and dim, to me, and with the least believable story.
I was expecting a revelation about Lachlan but it never came, there was no explanation for him at all and the scenario in Sydney was so improbable that I laughed when it occurred!
Della & Stan's difficulty surprised me as I'd have thought even in such a remote area things might have changed by the 80's. Also, if Stan was aware of adverse reactions to 'mixed' couples, I don't understand why he allowed his relationship with Della to go so far. It feels like he chickened out when he could have fought back.
Overall, I enjoyed the book for its description of women being supportive of each other. It's not highbrow literature but it's entertaining.