Brocková studied puppetry at the Academy of Performing Arts in Bratislava. She worked at Teatro Laboratorio Mangiafuoco in Milan, Italy, for two years. In Slovakia, Brocková became a member of the theaters: GUnaGU in Bratislava, L+S, Nová scéna, and Aréna.[2] She played the role of Milada Bučičová from Muzika in 2007.[3]
^"Petra Polnišová". Czech-Slovak Film Database (in Czech). Pomo Media Group. Retrieved July 8, 2014.
^Šmatláková, Renáta. "Petra Polnišová". Slovak Film Database (in Slovak). Slovak Film Institute. Archived from the original on 14 July 2014. Retrieved 8 July 2014.