The Wings of the Dove (1979)

I do not own the video.
This is an older tv version of the 1997 movie.
An impoverished woman who has been forced to choose between a privileged life with her wealthy aunt and her journalist lover, befriends an American heiress. When she discovers the heiress is attracted to her own lover and is dying, she sees a chance to have both the privileged life she cannot give up and the lover she cannot live without.
Elizabeth Spriggs ... Maud Lowder
Betsy Blair ... Susan Stringham
John Castle ... Merton Densher
Suzanne Bertish ... Kate Croy
Lisa Eichhorn ... Milly Theale