What would you say?

Let's say a mother and father and four of their children go away for a week and leave 2 teenagers, ages, oh...let's say...18 and 16, at home alone.

Let's say the mother makes a batch of cornbread for the last family-together meal and then leaves before the meal is finished (because she is driving a separate vehicle and making additional stops on the way).

Let's say half of the family returns with the father a day before the mother returns.

Let's say the mother finally returns and finds the afore-mentioned cornbread pan (now empty) and the dirty mixing bowl still sitting on the counter.

That said, would it be considered appropriate for the mother to, in kind, now make a point by letting the dirty laundry sit for a week?