What I enjoyed the most about this book are the characters and relationships between them. In fact, I loved to follow older women, at their retiring age, instead of teenagers or new adults that have all their lives ahead of them. The protagonists’ age also brought to the surface many discussions around grief, love, aging, family, regret, life choices and many other topics that wouldn’t have been discussed if the characters had been younger. 
Unfortunately, reading this book via audio probably wasn’t the best choice, because I wasn’t paying my full attention to what was happening in the book and therefore I didn’t grasp some plot twists nor connected much with the story. As an example, by the end of the book I still hadn’t learned the names of the protagonist nor could I tell which point of view were we reading from. For this reason, some twists didn’t hit for me as much as they could have and the overall plot was quite vague in my mind. 
Nevertheless, I found the original idea quite intriguing and I am planning to do a reread of this novel in the future, but in physical format.