Complex sentence: Lyndon Goff began publishing her poems while still a teenager and wrote for "The Bulletin" and "Triad" while also gaining a reputation as an actress; she soon adopted the stage name "Pamela Lyndon Travers".
Split into simpler sentences: Lyndon Goff began publishing her poems while still a teenager and wrote for "The Bulletin" and "Triad". It was during this time period that she was also gaining a reputation as an actress and adopted the stage name "Pamela Lyndon Travers".