My older girls are busy introducing their younger sisters to the delights of Jane Austen. “You must watch Persuasion,” insists Imogen. “I’ll explain all the difficult bits,” she adds, as she notices the uncertain look on nine year old Gemma-Rose’s face. So we settle down on the sofa, the DVD is inserted into the machine and soon we are immersed in a past world of gentle romance. An hour and a half later, everyone sighs with satisfaction, even Gemma-Rose, who didn’t need any…