Shacklebolt had thoroughly unprepared her for what her mission actually entailed. While his creation of Penelope Clearwater as Hermione's undercover identity had been expertly crafted to include very minute details of her work history, it had severely lacked any personal facts, requiring her to make them up as she went, trying to keep them as close to reality for her to remember accurately without being precise enough to identify her as Hermione Granger.