Petrů had an excellent teaching staff at that time (the head of the art department was academic sculptor Prof. Bohumil Dobiáš) and was characterized by a liberal atmosphere.

After graduating in 1961, she was employed in the ceramics workshop of the Central Office of Arts and Crafts in Štěchovice (formerly the David family's business),[2] and until 1969 she also carried out her free work there.

She creates her works almost exclusively in ceramic and fire clay, keeping the colour of the material and the raw surface or finishing them with patina and fine polychromy.

She catches people in banal or embarrassing situations, sometimes with sympathy and understanding (a group of seated ladies), sometimes with irony and exaggeration (eaters, sloths and dreamers).

However, the author is completely merciless in her expressive or grotesque portrayal of various heads, loudmouths and observers, whose human smallness is evident despite their horrible gesticulation.