What happens after the resolution has been made evident in Susan Glaspell's play "Trifles"?
Once Mrs. Peters and Mrs. Hale discover the bird with a broken neck, lovingly wrapped in silk and hidden in Mrs. Wright's sewing box, they know what has happened. They realize that in a fit of rage, Mr. Wright must have killed his wife's beloved bird as the final crushing blow to her spirit.
The women decide to hide the bird from their husbands, claiming that the cat must have killed it, because they realize the bird will be the evidence the men have been looking for to blame Mrs. Wright for her husband's murder. Without saying it, there is an unspoken agreement and understanding for Mrs. Wright and her actions against her husband.