Mrs. Sundance
Starring Elizabeth Montgomery, Robert Foxworth, L. Q. Jones, Arthur Hunnicutt, Lurene Tuttle, Claudette Nevins, Lorna Thayer, Robert Donner, Byron Mabe, Dean Smith
It's a western movie, and has a rating of 6 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Brazil.