A Book You Should Read

I finished reading this novella today, and it was SO GOOD. I was a bit confuzzled when I began, because it starts with a 70-year old woman returning from the funeral of her husband. I told the dh and he said, "Maybe it's a time travel."
It was and it wasn't, kind of like the movie PEGGY SUE GOT MARRIED. The bulk of the story took place in a small town in West Texas in the 50s, where Christina has met the love of her life, while her mother is railroading her to marry another man (the husband...