What do you think her husband told her which made her rect in the way she did lamb to the slaughter?

In "Lamb to the Slaughter," her husband likely told her that he was leaving her, which shattered her world and triggered a wave of disbelief and betrayal. This devastating news pushed her into a state of shock, leading her to react impulsively and violently. Her subsequent actions reveal a blend of desperation and a primal instinct to protect herself, ultimately transforming her from a loving wife into a calculated murderer.