The pile of stuff at the bottom of the stairs

Hopkinson pens a hilarious and acutely-observed novel about marriage, motherhood, children, and work and readers everywhere will find Mary's trials hilariously familiar as they cheer her on in her efforts to balance home, work, children, and a clean bottom stair!
What's the thing you hate most about the one you love?
Mary doesn't know whether it's the way he doesn't quite reach the laundry basket when he throws his dirty clothes at it (but doesn't ever walk over and pick them up and put them in), or the balled-up tissues he leaves on the bedside table when he has a cold, or the way he never quite empties the dishwasher, leaving the "difficult" items for her to put away. Is it that because she is "only working part-time" that she is responsible for all of the domestic tasks in the house? Or, is it simply that he puts used teabags in the sink?
The mother of two young boys, Mary knows how to get them to behave the way she wants. Now she's designing the spousal equivalent of a star chart and every little thing her husband does wrong will go on it. Though Mary knows you're supposed to reward the good behavior rather than punish the bad, the rules for those in middle age are different than the rules for those not even in middle school...