Help! Looking for a HR.

Looking for a HR book that I've read but can't remember the title or author. The h lives in a religious community with her family. I can't remember the her religion but each person in the community has a specific job they do, the h is a baker and works in the bakery with her mother. The H and h meet when the H comes into their bakery with his brother and sister in law. H is a farmer and lives with his family on the family farm. There's the H's father, 2 older brothers and their wives. H's mother died when he was young. H and h marry and he takes her to live on the family farm. Majority of the book takes place after their married. I remember the oldest brother and his wife have been married for a long time but haven't been able to have children. The other brother and his wife have a son and she is pregnant during the book. She ends up going completely insane. She had a horibble childhood and it seems her mother was mentally ill as well. Anyway, she accuses the H of being the father of her unborn child because she's trying to make the husband jealous. Eventually she decides the only way to prove that the husband loves her is if he rescues her from a dangerous situation. She locks herself in the barn and sets it on fire!! Husband tries to rescue her but can't and she and baby die (he gets his own book later and the h is native american). Anyway, eventually H and h work everything out and hea