Given how limited her voice sounded onstage in The Little Foxes and onscreen playing a stage actress in A Little Night Music, I think she does quite well vocally in the film. I like the film a lot, even though I think it makes a pretty big misstep by going to the roadhouse. Not just because they leave the house unnecessarily, but because a major point gets lost by cutting the section where Martha keeps trying to get George to stop her from going upstairs with Nick. It may be one of the two most important turning points in the play. And I think it motivates Martha's monologue at the beginning of Act Three, although of course that is not in the film. Which makes sense under the circumstances, but if the earlier misstep had not been made, I think it could have worked in the film.