In 1812 she was at Strassburg, whence she paid more than one visit to J. F. Oberlin, the famous pastor of Waldersbach in Steintal (Ban de la Roche), and where she had the glory of converting her host, Adrien de Lazay-Marnesia, the prefect. In 1813 she was at Geneva, where she established the faith of a band of young pietists in revolt against the Calvinist Church authorities notably Henri-Louis Empaytaz, afterwards the companion of her crowning evangelistic triumph. In September 1814 she was again at Waldbach, where Empaytaz had preceded her; and at Strassburg, where the party was joined by Franz Karl von Berckheim, who afterwards married Juliette. At the end of the year she returned with her daughters and Empeytaz to Baden, a fateful migration.