The location of Burnham Overy Staithe directly defined the settings of the story. Throughout the remainder of her stay in the village, she spent time in the sandhills and wrote notes, creating the characters of Anna and Marnie. This experience prompted Robinson to write a story. She came near the house and looked through an upper window, where she saw a young girl sitting and having her hair brushed. At a distance, she noticed the house seemed to disappear into the surroundings-until low sunlight dramatically illuminated its brickwork. During low tide, Robinson walked from the beach along the marsh path, watchful of a house with distinctive blue doors and window frames, named 'The Granary'. Major natural features of the location include a creek and tidal marsh, with an isolated beach surrounded by sandhills. Robinson had a life-long connection to Norfolk, and a specific connection to Burnham Overy as early as 1950. The creation of When Marnie Was There began during a family summer holiday in the coastal village of Burnham Overy Staithe, according to Robinson's daughter.

The location of Burnham Overy Staithe inspired Robinson.

Robinson saw writing books for older children as a 'welcome escape from the strict discipline of vocabulary and subject matter' of stories for younger children. Robinson only had experience at writing books for very young children, and was well known for her Teddy Robinson series that followed the make-believe interactions between a girl and a teddy bear, and later her Mary-Mary series that followed the mischievous family life of a young girl, which Peter Vansittart described as 'slightly more sophisticated'. In 2014, it was adapted by Studio Ghibli as an animated film of the same name. The story was adapted to television in 1971 and radio in 2006. It received highly positive reviews, praised for its intensity of natural imagery, balance of humour with difficult themes, and emotional weight. The novel explores themes of alienation, loneliness, and forgiveness in childhood. They develop a secretive relationship they come to cherish. There she meets a mysterious and headstrong girl named Marnie who lives in a house overlooking the marshes. The story follows Anna, a young girl who temporarily moves to Norfolk to heal after becoming ill. Robinson, first published in 1967 by Collins. When Marnie Was There is a novel by British author Joan G.

When marnie was there novel