"A Jury of Her Peers" is an excellent title for Glaspell's story as it works on many levels. The foundation of trial by jury is that the defendant faces charges which are heard and interpreted by a jury of peers: peers meaning equals in status. Women were not allowed to sit on a jury at the time the story was written, so no woman was in fact allowed this basic right as her peers were not part of any jury. The fact that Mrs Hale and Mrs Peters weigh up the evidence, ascertain the events of the killing of Mr Wright and act according to their interpretation of events means that the case is given a woman's perspective, and that Minnie Wright's motivations and actions were understood by them.
There is a conspiracy between the women to cover Minnie Wright's motive for the crime (the killing of her canary). The men who will present and review the evidence will not have a clear picture of the events, and there will probably not be enough evidence to convict her.