i also need help with a question that is:
what elements of the setting in "lamb to the slaughter" contribute to a mood of peacefulness at the beginning of the story?
In response to your second question, it is clear that the way that Mary Maloney is described and the domestic bliss of her marriage and home clearly contribute towards creating a mood of peacefulness at the beginning of the story. Note how she is depicted as the loving, perfect wife that just simply adores her husband and works hard, even while pregnant, to tend to his every need.
For the first question, i believe the title has actual biblical meanings.
go to this website to find the actual meaning