The Question and Answer section for Trifles is a great resource to ask questions, find answers, and discuss the novel.
There are a number of metaphors in this short story. The dead bird in the cage, for example, represents Mrs. Wright trapped in an abusive and lonely marriage.
Cabn you please re-state your question? I'm not sure what you are asking.
The story is very much dependent on perspective and how objective the characters are. In this case perspectives are directly related to gender and theme. Check this out: