This is a sort of age gap, almost ice queen romance that is fun and enjoyable.
Hazel, a part time delivery driver has made friends with George, an 80 something who lives alone. She does odd jobs for him, spends time with him etc. George has a fall and she raises the alarm and gets him to hospital. etc.
Enter the family in the shape of Imogen the niece (who just happens to be a 30 something lesbian). She comes to visit George and set up care for him which is not straight forward. She is suspicious of Hazel as she thinks she must have ulterior motives for helping George. Imogen relocates to provide longer term support for George and well,
Hazel has a prosthetic leg (Petunia) following a childhood amputation.
There’s a lot of information here about the care needed for keeping her leg healthy etc and the impact on Hazel’s life.

There is of course an epilogue
And all are doing well – upwards and onwards.
Anyway it all works out in the end

I really liked this book.