After five successful years, the Dr Willoughby actors are wont to confuse reality and fiction. Can Donna Sinclair, star of the show, really heal the sick and perform open-heart surgery? Some of the viewers think she can. Is she really as saintly and composed as her character? Not quite. To put it mildly, she’s a highly strung prima donna, an implacable control freak, and a monstrous megalomaniac.