My sister Joanna spent the summer with us as nanny extraordinaire, before heading back to the United States last week to start her first year of college as a musical theater major. We’ll miss her smiles, random bursts into song, and the opportunity to leave the house for dinner without a toddler in tow. Theo now periodically chides us with “well, Joanna said” or “Joanna would let me” as Brian and I transition back into split work/childcare schedules.