Moelona joined a British-French Society in Cardiff, and became acquainted with the works of Alphonse Daudet, several of which she translated for Welsh-language periodicals, and published as Y wers olaf (The Last Lesson, 1921).
Moelona's involvement with a British-French society in Cardiff led to her translating and publishing works by Alphonse Daudet in the Welsh language. This resulted in the publication of "Y wers olaf" (The Last Lesson) in 1921.