Lamb to the Slaughter reference in Desperate Housewives?

This week there was a scene in Desperate Housewives that seemed very close to a scene in Lamb to the Slaughter where Patrick tells Mary he is leaving and she pretends nothing is wrong.
In Desperate Housewives, Paul kicked Beth out of the house and in the next episode she walks in the house with bags of shopping saying she would get dinner ready. She says things like "we can't be finished" "all couples argue" "everything is fine".