“Fans of the book know that Monica doesn’t really appear much in later books, but you hear that she and Enid are a couple. And so we thought we’ve got to play that on screen,” shares Treadwell-Collins. “Because Monica at the moment would never have done anything with Enid, but we had to promise that she had these feelings she was bottling up. And that was really, really important to us to show there was another side to Monica. I think our Monica, and Claire Rushbrook’s Monica, is a so much more multifaceted character than the Monica that was in the book.”