Felińska became involved in a growing pro-independence faction in the city, which wanted to gain Polish independence from the Russian Empire.

Using her writing talent, she gained a position of importance in the organization, eventually being appointed as the secretary for the independence group.

However, in 1839 the group was broken up by the Russian authorities, resulting in Felińska's arrest, sentencing, and exile to Siberia.

During her time in Siberia, Saratov, and other places inside Russia, she wrote a number of memoirs documenting her experiences.

In addition, she wrote several novels and entries in Samuel Orgelbrand's Encyklopedia Powszechna - the first modern Polish encyclopedia.