Tristana

Tristana is a 1970 Spanish film directed by Luis Buuel. Based on the eponymous novel by Benito Prez Galds, it stars Catherine Deneuve and Fernando Rey and was shot in Toledo, Spain. The voices of French actress Catherine Deneuve and Italian actor Franco Nero were dubbed to Spanish. Tristana is a SpanishFrancoItalian coproduction.

Don Lope inherits money from his sister, Tristana eventually marries him, and, when don Lope is ill, Tristana finishes him off by feigning calling the doctor and opening the window to the winter cold.In the novel, Tristana resignedly marries don Lope in order for him to receive his inheritance. Also different from the novel is Saturnos increased role barely mentioned in the novel, he is Tristanas third love interest in the film. ........

Source: Wikipedia