When she first met the Shadowhunters, Clary had idly wondered who dusted the all the books in the Library. They glowed softly in the lamplight, without the spiders webs and dust that crept onto all the books in her bedroom, despite her mom's nagging and her occasional flurries of tidying.
She hadn't thought to wonder who made the beds in the Infirmary, or in the rows of spotless bedrooms, polished the wooden floors, and cleaned the windows.
She found out the answer to both questions when they returned to New York after the Mortal War.
"A rota?" she said, baffled.
Izzy nodded, gloomily. "Hodge did all the housework. Mom says that as she's going to be running the Institute on her own now, she doesn't have time. So she's made this – and she pointed at the rota. If we want any money to spend, we have to do the chores.
"Look at it this way," said Jace, cheerily. "You can tell she thinks you're a real Shadowhunter now. You've got just as many chores as the rest of us.