Hetty graduated as film director from the Netherlands Film Academy in 2015. Her graduation film, Nighthaven, won several awards and screened at international film festivals.
In 2017 she conceptualized and directed the film, Jungle (2017), which was nominated for the Best Television Drama Award and won the Best Actor Award, at the Golden Calf Competition of the Netherlands Film Festival. The film was also well received internationally, getting nominated for a Rockie Award, and the Prix Europa, and was the Dutch entry for the 2018 International Emmy Awards. Similarly, Nothing to Declare, which premiered at the Netherlands Film Festival, was the official Dutch entry for the Oscars in 2019.
Hetty is currently working on the feature films Souls, with Topkapi Films, and Running in the Shadows, with Bind Film.