The title "Lamb to the Slaughter" refers to the idea that someone is unsuspectingly led to their demise, much like a lamb being led to slaughter. In the story, the main character uses a leg of lamb as a weapon to kill her husband after he tells her unexpected news, thus being metaphorically compared to a lamb led to slaughter.

Isaiah 53:7 and Acts 8:32

I think that examples of the mood in Lamb to Slaughter were:

Suspense- You were wondering whether or not she would get caught

Mystery- There was a mystery, after she covered up how she murdered him

Anticipation- You were waiting for them to realize that she could have killed him with the lamb that they were eating.

The inciting force of "Lamb to the Slaughter" occurs when the husband tells his wife that he is leaving her, causing her to react impulsively and kill him with a frozen leg of lamb. This event sets off the chain of actions that drive the story forward.

The title of that story is "Lamb to the Slaughter" by Roald Dahl. In the story, the wife kills her husband with a frozen leg of lamb and then serves it to the police officers who are investigating the murder, cleverly disposing of the murder weapon.