I'm looking for the name of a movie. From the 1960s. A blonde woman meets a man who treats her well. They get merried and then her mother and sister move in. movie ends with the woman closing the door on the mother and sister leaving them behind inside the burning house/barn. The door,maybe painted red,and has a small "speakeasy"type opening with metal bars,which the mother is looking through as it is engulfed in flames

I'm not quite sure I follow this though I'm probably going to be way off-base because of misunderstandings.

The Shuttered Room (1967)
Starring Gig Young, Carol Lynley, Oliver Reed
IMDb synopsis:
In a small island off the American coast, the Whateleys live in an old mill where a mysterious bloody being creates an atmosphere of horror. After her parents get killed, young Susannah is sent to New York by her Aunt Agatha, who wants her to avoid the family curse. Years later, Susannah, now married, persuades her husband to spend a holiday in the abandoned mill. Once on the island, Susannah and Mike soon find themselves exposed to the hostility of a gang of thugs led by Ethan, Susannah's brutal cousin.

The Shuttered Room (1967) - IMDb

Here are a couple of film clips:
http://www.youtube.com/watch?v=nJpf8nqgBTw
http://www.youtube.com/watch?v=C8vwtfoy0SQ