Describe Martha's viewpoint on Minnie's innocence or guilt and discuss her rationale

Martha used to be friends with Minnie years ago, but the isolated, cheerless nature of Minnie's life precludes Martha from visiting her often and, now, makes her feel guilty. With Mrs. Peters, she finds clues as to why Minnie killed her husband; knowing that the men investigating Minnie are not truly her "peers," she ultimately decides to keep the evidence secret.