Complex sentence: In 1903 she was listed as an Associate of his famous Photo-Secession and two years later he listed her as an official Member; in 1908 she became a Fellow of the Photo-Secession.
Split into simpler sentences: In 1903 she was listed as an Associate of his famous Photo-Secession and two years later he listed her as an official Member. In 1908 she became a Fellow of the Photo-Secession.