Author Catherine Storr was educated at St. Paul's Girls' School and went on to study English at Newnham College, Cambridge. She then went to medical school and worked part-time as a Senior Medical Officer in the Department of Psychological Medicine of the Middlesex Hospital from 1950 to 1963.
Her first book was published in 1940, but was not successful. It was not until the 1950s that her books became popular. She wrote mostly children's books as well as books for adults, plays, short stories, and adapted one of her novels into an opera libretto. She published more than 30 children's books, but is best known for Clever Polly and the Stupid Wolf and Marianne Dreams, which was made into a television series and a film.
Oddly specific in the beginning passage, which makes it feel like a sequel to a previous book, and then detailed in certain areas with language that does not feel like it is aimed at a younger audience. And the illustration of David dancing... Anyway tells the story of David well, I'm just not sure what age they are aiming for.