The Life She Wants by Mel Sherratt
Most of the book alternates between two women. Juliette has just moved into a new home and is grieving the death of her young daughter. Her husband is still working in the city so she's alone for most of the week. Sarah has lived with her own husband in the house next door for years and is concerned about the impact new neighbors will have on their life, especially after Juliette asks about the little girl she saw in their garden.
I didn't love this one. I'm not sure if I wasn't paying close enough attention or if I was actually supposed to confuse the first person narrators in some chapters. The book jumps back and forth in time and it wasn't immediately obvious that certain events didn't make sense compared to what was happening in the present day.
Disclosure -- The publisher provided me with an advance review copy. This post contains affiliate links.