- Wife and business partner of John Halas.
- She taught at the London International Film School.
- She answered John Halas's ad for an animator in 1938. She was already an experienced illustrator and animator. Their collaboration began with a series of films that were made in Budapest.
- She directed and designed films as well as producing them. She wrote or co-wrote hundreds of scripts, commercials, propaganda, educational, and entertainment films.
- Mother of Vivien Halas and Paul Halas.
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