In Susan Glaspell's "Trifles", what are the clues to recognition and reversal?

In the play Trifles, by Susan
Glaspell, the reversal and recognition of the specific tragedy pertaining Minnie Wright
occur during the search and investigation of her house after the presumed suicide of
Minnie's husband.

Of course, the characters who experience
the reversal and recognition are Mrs. Hale and Mrs. Peters. The reversal occurs when
they see the empty birdcage with the broken door, which seemed to have been forced open
by a very furious person. Aside from that, they find the canary that belongs to that
birdcage wrapped in silk and with a broken neck. The fact that the canary had been laid
to rest in a respectful manner suggests that it was not Minnie who did the deed, but her
husband.

This is the moment of
reversal: Mrs. Hale and Mrs. Peters see the birdcage and
the bird. This evidence reverses their previous thoughts about the situation. Now they
are clear about what went on in that house. They no longer take the side of justice, of
their husbands, nor society: They understand and, in their own way, they are willing to
conceal Minnie's secret.

After
reversal, comes the
recognition: After putting the information together they
realize that Minnie is an abused wife who apparently snapped at her husband. Now the
plot comes to a full circle- The once submissive and obedient wives of a sheriff and an
investigator are connected emotionally to the situation, and understand what drove
Minnie to what she did. Now, they are in with Minnie, and recognizing what happened
helped them understand best how bad things were for this poor
wife.