My hypothesis is that this piece was meant to highlight the injustice of male dominance in the society that this story was set.
Minnie Foster is believed to have killed her husband by asphyxiating him while he slept. Much of the story is written focuses on men involved with the investigation converging on the house to inspect it and find evidence. Two men bring their wives; Mrs Hale and Mrs Peters, the sheriff's wife.
From their interactions with the men it becomes obvious that while women here are respected to a point, they are still subjugated by men. Mrs Hale and Mrs Peters seem to have had 'their sense of place' instilled into them as upon entering the house they timidly wait near the door, not wanting to intrude into the men's business. The county attorney further highlights male dominance by saying to the ladies, "Dirty towels! Not much of a housekeeper, would you say, ladies?" (6). The attorney implies that Minnie Foster is failing as a housekeeper and therefore failing as a women. He stereotypes what women must be. The men collectively also show how they believe women are not as intellectually capable as themselves. "Well, can you beat the women! Held for murder, and worrying about her preserves!" (6). Here Mr Peter laughs at how seemingly naive and disconnected the women since they are worrying about broken jars of preserves instead of the dead husband upstairs. Mr Hale reinforces this stereotype by saying to himself as they ascended the stairs, "But would the women know a clue if they did come upon it?" (7). From this it is clear the men didn't believe that the women were wise enough to recognise things as evidence even if it was obvious.
Unfortunately, no one can really blame the men for thinking this way. After all male dominance is something that they have had all their lives. The degradation of women did not start and stop with this story.
And while the stereotypes are morally wrong and limit woman's potential it is understandable that in the farming environment they brawn would have been most important whereas intellect is omnipotent today. So there may have been a general truth that being a housewife was all women could do working on a farm since in general (I say this with caution!) women are weaker than men.
I can also understand how men would have perceived woman as intellectually incapable. Certainly to a point, women would have been naive since they would have been disconnected from much of the outside world. Mrs Hale and Mrs Peters worrying over broken preserves instead of a dead body is testament to this.
But what was most noticeable for me was that these women actively subjugated themselves by willingly fulfilling their stereotypes. Even when the men were upstairs, Mrs Hale felt compelled to clean up, it is as though it is an instinct. And I shake my head every time I think of how the women failed to show the evidence that they had found that would have been key to the trial. I know they probably felt compassion for Minnie Foster because of universal suffrage, sisterhood etc. But the only way they can escape from this subjugation that they so seemingly hate is to challenge it. Proving their intellect by showing this evidence would have been a great way to do so.