In a film version of this scene from Trifles, the emphasis on the women’s emotions would most likely be achieved by focusing on the women’s facial expressions. Facial expressions are a powerful way to convey subtle feelings and inner conflicts, allowing the audience to connect with the characters' emotions of regret, isolation, and empathy.
While other elements such as lighting, props, and costumes can enhance the overall atmosphere, the nuances in the women’s expressions would be crucial in capturing their emotional states and the context of their dialogue.