Sophia was interested in politics and engaged herself in state affairs during her life, and was occasionally present as an observer during the parliamentary sessions. In 1866 her birth country, the Duchy of Nassau, was annexed by Prussia. After this, she kept an anti-Prussian view. In the summer of 1870, she was present in Ems where she met both the Tsar of Russia and the King of Prussia shortly before the declaration of the war, and kept herself informed about the political situation. She did not oppose the united Empire of Germany as such, but disliked how it had been created and the dominance of Prussia. She did, however, have a good personal relationship with Crown Prince Frederick of Prussia and his consort.