The Switch by Beth O'Leary

Another lovely story from the Author of "The Flatshare." And this is a different sort of lovely. Still with the great character building and the people with very real problems but still a happy ending. Yes, that includes some love interests but you just know that Elaine and Leena would be fine without them.  A little dramatic and definitely a trigger warning for sibling death (ufda -- if I had read this a year ago it would have been MUCH worse.)
Leena has an amazing job with an even better mentor. So good that her mentor tells her that she is NOT dealing well with her sister's death and that Leena now has a two month paid sabbatical. Of course, Leena does not believe she needs one. But when she talks to her grandmother, the original Elaine, they both discover that they could use a little vacation from their lives. And that the town mouse switching with the country mouse might mean they each appreciate their own lives a little more.
Also, major props for Elaine having a thriving sex life at seventy-nine.

Four stars
This book came out August 18th
ARC kindly provided by Macmillan and Edelweiss
Opinions are my own