In parallel, Charlotta Raa-Winterhjelm also founded her own Swedish language theater company in 1866. In 1868, the first theater dramatic school in Finland was founded in connection to the theater, and Charlotta Raa-Winterhjelm was made its instructor. As a drama teacher, she worked to introduce the
Finnish language on stage. Finland, at that time a Russian province, had been a Swedish province until 1809, and the language spoken on the theater stages in Finland was not Finnish but the
Swedish language, which was the second language in Finland and the language of the upper classes: most actors in Finland at the time were from Sweden, or from the Swedish speaking minority in Finland. During this time, Finland was a part of Russia. Under Russian rule, a wave of nationalism swept over Finland to preserve the Finnish cultural identity and independence and escape a complete incorporation with Russia, and her initiative was a part of this cultural wave. Despite being a Swede herself, she felt that Finland should have a theater stage in the Finnish language. The Russian authorities reacted to her initiative by closing down the drama school in 1869. As a response of protest, Raa-Winterhjelm pronounced her lines in the Finnish language in the next play she participated;
Lea by
Aleksis Kivi, which made her historical as the first actor to have pronounced her lines in the Finnish language on a public theater in Finland. She repeated her act by being the first actress to play
Ofelia and
lady Macbeth in the Finnish language. In 1872, Charlotta Raa-Winterhjelm formed the Finnish language theater company. This was however opposed by the Russian authorities, who banned her from accepting assignments in the Finnish language, and the same year, she left with a travelling theater company to perform in Oslo in Norway. ==Later career==