Throughout the war, she continued to defend Boer interests and argue for peace, as did her brother William Philip Schreiner, even though she was suffering physically and psychologically and all her efforts only met with ridicule.
Durante a guerra continuou defendendo os intereses dos bóer e avogou pola paz, como tamén fixo o seu irmán William Philip Schreiner, se ben foi ela quen sufría física e psicoloxicamente ao ver que todo o seu empeño era inútil.