Violets Are Blue (1986)
Sissy Spacek played in The Raggedy Man (1981), where she is divorced, not widowed.
The Help
Midwives
In the movie Carrie, Sissy Spacek played Carrie.
The IMDb lists numerous possible answers to this question. If the question refers to the 1976 movie, Carrie was played by Sissy Spacek.
Sissy Spacek
Carrie
The film is "Missing".
Sissy Spacek played Loretta Lynn in the movie.
The two have not worked together in any feature film.
"The River" (1984). Stars Mel Gibson, Sissy Spacek.
Beverly D'Angelo played Patsy Cline in the movie.