All I remember is that it's a historical drama. A woman marries into a family with three sons. She finds out after the marriage that her husband mind is like a child's. She tells the mother-in-law that she tricked her and wants out of the marriage. They convice her her to stay. Her husband loves her dearly. He is always running with his servants through the yard, I think they are chasing  butterflies but I am not sure. The last scene I remember was her leaving to search for something with her two brother-in-laws leaving her husband behind and her husband being sad. Any help would be appreciated.

Yes, thank you for your help.