This is always one of my favorite threads. I copy and paste your suggestions in my list of "want to reads."
Marsha, "Secret Life of Bees," is one of my all-time favorites. Have your read "Mermaid's Chair?" I didn't like it nearly as well.
If you like Montana, try "This House of Sky." It's an auto-biography by the western writer, Ivan Doig. It made me appreciate the hardy souls who settled in Montana and I learned I would never want to be a sheep herder!