I think I'm right in saying that much of what one sees on the internet about Audrey Hepburn in WWII derives from Robert Matzen's 2019 book "Dutch Girl: Audrey Hepburn and World War II".
I have not yet read Matzen's book, but one review suggests that Hepburn’s story might be a tale more complex, less edifying, but perhaps more thought provoking than a simple history of resistance.
I should repeat that I haven’t read Matzen’s book and that I am not sure of the source for the reviewer’s claim that “Hepburn was selective with details” of her and her family’s wartime history. It’s perfectly possible that the video’s depiction of her resistance is accurate.
I do know, however, that the history of resistance, collaboration, and everything in between in Nazi occupied Europe presents challenges for the historian, arising not only from the complexity of events and allegiances during the war but also from the decades of shame, concealment, and myth making that followed.
>>Ella van Heemstra, Hepburn’s mother, wrote newspaper columns in the spring of 1935 praising fascism; she partied with the Mitford sisters, flirted with Herr Hitler. Even after the Nazis had sent Dutch Jews to death camps and installed fascists in key public offices, Heemstra was still angling for work with the occupiers. It wasn’t until mid-1942 that Heemstra switched sides, when the Nazis took hostage a beloved family member and shot him in a reprisal against saboteurs. After the war, when her collaboration was questioned, she edited her history, and made sure that Hepburn was selective with details as well. <<
https://www.jewishbookcouncil.org/book/dutch-girl-audrey-hepburn-and-world-war-ii