 During the 1970s she taught music and the flute at Downe House School, Cold Ash, Newbury.In her 1997 memoir "A Genius in the Family", co-written with her brother Piers, du Pré chronicled the complex relationship, both tortured and deeply loving, which she had with her sister.She claimed to have agreed to the affair because she wanted Jackie to experience the stable family life the younger woman envied.