Adelaide opened the letterbox to find that her genius remained unrecognised – in fact, rejected – by all but her children. And a few others who were highly supportive, but lacked influence outside their own spheres.

And anyway, this wasn’t about genius. It was about skills and knowledge and experience, her possession of which she had most clearly demonstrated.

She took a deep breath, walked out of the post office and looked both ways before she crossed the road.