Answer:
The theme that is evident in this excerpt from Susan Glaspell's Trifles is Loneliness causes grief.
Step-by-step explanation:
This conversation between Mrs. Hale and Mrs. Peters, has a melancholic feeling, and they mention several times how the place feels lonely and apart from everything and every one, this connected to the last comment where they mention the nonexistence of children sets the theme about loneliness and grief but not only physical loneliness but emotional loneliness