Before heading off to Anmer Hall with their kids, Prince George, 6, Princess Charlotte, 4, and Prince Louis, 23 months, in late March, William and Kate shared on their Instagram photos of them hard at work inside their office at Kensington Palace talking to mental health charities about the COVID-19 pandemic. The Duke of Cambridge was on the phone with Mind CEO Paul Farmer, and the Duchess of Cambridge spoke to Catherine Roche of the children’s organization Place2Be. “By pulling together and taking simple steps each day,” they wrote, “we can all be better prepared for the times ahead.” By the way, the books on Kate’s desk appear to be Penguin Classics clothbound editions of titles like A Christmas Carol, Sense and Sensibility, Mansfield Park, Great Expectations, Wuthering Heights and…