She was associated with Gustav Mahler, and was one of the soloists in the posthumous premiere of his Das Lied von der Erde in 1911.
[4] She was active in Vienna, joining the Hofoper in 1907, and Munich, often singing under Gustav Mahler's directorship in roles such as Amneris, Carmen, Delilah, Fidès, Ortrud, and Santuzza.
Cahier and fellow American William Miller, a tenor, were chosen by Bruno Walter to premiere Mahler's Das Lied von der Erde in Munich posthumously in November 1911.
[4] She also sang in the New York premiere of the work in 1922, with tenor Orville Harrold, under conductor Artur Bodanzky.
[4] Other appearances there included Fricka in Die Walküre, alongside Olive Fremstad and Margaret Matzenauer.