Towards the end of 1918 Holst had asked Joseph to provide a libretto for his opera The Perfect Fool, feeling that she might possess the required light touch that he thought his own writing lacked.
Cara a finais de 1918 Holst pedíralle a Joseph que lle proporcionase un libreto para a súa ópera The Perfect Fool, considerando que ela podía dar o toque de luz requirida que el cría que non tiña a súa propia escritura.