After a period of unpaid volunteer work as an assistant with the "Aachener Post" (newspaper) during 1921/22, she embarked on her teaching career in the Ruhr region.
Luise Dornemann became increasingly radicalized, and in 1928 became a member of the Communist Party ("Kommunistische Partei Deutschlands" / KPD).
In 1932 she was a co-founder, in Düsseldorf, of the "United Association for Proletarian Sexual Reform and Mothers' Protection" ("Einheitsverbandes für proletarische Sexualreform und Mutterschutz").
[1] After several years of intensifying political polarisation, everything changed at the start of 1933 when the Nazis took power and lost no time in transforming Germany into a one-party dictatorship.
[1] The Nazi government quickly put an end to the sexual reform movement which she had championed, with abortion laws becoming more restrictive than before.
[2] Fairly soon after her husband's murder Luise Dornemann moved to Berlin where she lived "underground" (i.e. failing to register her domicile with the town hall), supporting herself with sewing and household work.
Along with the SED she also joined the Democratic Women's League ("Demokratischer Frauenbund Deutschlands" / DFD), a state backed mass organisation which now provided a base for Luise Dornemann's political career progression.
[2] She was still only 52 when she withdrew from her high-profile political positions, and for the next ten years, till 1963, she worked at the Party Central Committee's Institute for Marxism–Leninism.