Then she's going to need to wash the baseboards, since a little dust fell from the vents.
Which is when she'll realize how dirty the couches are, so she'll purchase a dust-buster and put it to use.
When she's storing the dust-buster in the laundry room, she'll decide to go ahead and clean the washer and dryer.
While she's at it, she'll hire a crew to steam clean every room in the house with the most environmentally friendly treatment possible.
And, a week later- just when she thought every nook and cranny of the house was perfectly suitable for a newborn to come home to- she got out the vacuum cleaner for some maintenance cleaning, and realized how dirty that was....