Daughter of Johann Andreas Stein; born at Augsburg. She was scarcely eight years old when she played before Mozart on the occasion of his visit to Augsburg in 1777. After her father's death, she assisted her brother in carrying on the pianomaking business, and in 1793 she married a pianist and teacher from Stuttgart named Johann Andreas Streicher and moved to Vienna. Here she and her brother, assisted by her husband, carried on the business very successfully until 1802, when the partnership was dissolved and she and her husband carried on a business under the name, Nanette Streicher, geborne Stein, which was very prosperous. A cultured and charming woman, she was very friendly with Beethoven, whom she helped about his housekeeping arrangements.