Żmichowska lived a life she herself called as active as possible – dynamic and modern, which we can now get to know thanks to personal motives in her work and an abundant correspondence. She travelled to Paris, where, among emigrants forming a culture of solitary men, one of her brothers lived. In this capital of the world, she cut her hair, started smoking cigarillos like George Sand and enrolled, as one of the first women, into the French Academy. She read new philosophers and writers in the National Library. She was interested in the modern European education systems by J.H. Pestalozzi and his student F. Fröbel. With such intellectual background and a great knowledge of French, she became a popular teacher in Polish mansions; she didn't limit herself to her profession though, but travelled through all three partitions, distributing brochures and books that were forbidden in Congress Poland. When in the 1840s she lived in Warsaw, she was at the centre of a group of suffragettes, students whom she called enthusiasts; these girls wanted freedom when choosing their life partners and the right to education and public activity. They would form a sisterhood so many years before the feminist term caught on.
Żmichowska herself invented her own core curricula for girls: a scientific one and a home economics one; even the latter was quite revolutionary at the time. Around 1844 the activist attempted to open a modern school for girls in Poznań, but failed. Her ideas were implemented to schools only much later, in the XX century; one of them was named after her, which is possibly the most important commemoration of Narcyza Żmichowska.
The enthusiasts were engaged in the political, democratic ferment of the late 1840s – the Polish Spring of Nations. They took the part of the anonymous, the conspirators who had no relation to elites, for example of students who, as a group, were much more active than in the early 1830s. After the fall of the Kraków Uprising (1846), they were sympathising with a group of conspirators connected to the so-called conspiracy of artisans, in which Żmichowska herself was the treasurer. Conspiration – as Maria Janion and Maria Żmigrodzka wrote in the book Romantyzm i Historia / Romanticism and History – for the youth was one of the elements of generational auto-identification, and becoming part of it was an initiation to adulthood. After the artisans' conspiracy was discovered in 1849, the writer was imprisoned in Lublin, and later, in 1852, she was convicted to three more years of home arrest in her family's apartment. This traumatic experience and solitude made her interested in Andrzej Towiański's Circle of God's Cause, but her natural scepticism won over this fleeting fascination.
The necessity of ending her underground political activity, gave her time to focus on pedagogy. During her arrest, she worked on programmes for the education of boys coming from poverty and courses for women. She started the latter in 1862, when she finally could return to Warsaw and settled in her apartment on Miodowa Street. The courses were informal, girls described them as pedagogic talks, and their programme was an anticipation of positivist ideas: both science and humanities were taught there, and the basis was a holistic understanding of progress.
This atmosphere of positivism and the experience of prison made her doubt the sense of military fight with the occupants. A letter from 1858, sent to Parisian emigrants' milieu and very much discussed, is proof of this political diagnosis: she postulated everyday patriotism among all social classes. She couldn't obviously be a supporter of the January uprising, even though she helped the wounded and imprisoned. The fall of the uprising, the following repression and Russification which was especially hard on education, were incredibly depressing for Żmichowska. She decided to leave Warsaw and go to her sister's house in the countryside. She didn't fully recover until her death in 1876.
This rebellious and unique woman never married and had no children. Apart from the relations with her siblings, her family were her students. Without any doubt – we can read it in her letters – she had a lot of affection for these girls, which is sometimes interpreted as a homosexual passion, although professor Grażyna Borkowska calls it a question that will have to remain unanswered.