Ms. Kochavi, who lives in New York and Tel Aviv, said “a lot of serious movements are happening on social media.” She said she and her father had worked hard to make the Instagram experience authentic and real, with hashtags and captions, while seeking to “maintain the sense of honor.”
Eva Heyman was born into a secular, middle-class family in Nagyvarad, a town that then had 100,000 residents, a fifth of them Jewish. She lived with her grandparents after her parents divorced. She made the perfect subject for the Instagram project: She dreamed of becoming a news photographer and began writing her diary on her 13th birthday, Feb. 13, 1944.
The Kochavis read about 30 diaries written by teenagers during the Holocaust before settling on Eva’s, because there was “something very modern and relatable” about her, Mr. Kochavi said.
The Holocaust struck late and swiftly in Hungary, with only three months between the German invasion in 1944 and the mass deportation of its community of more than 400,000 Jews to Auschwitz — a historical tragedy telescoped into little more than 100 days.
“Eva Stories” was filmed over three weeks in Ukraine, and 400 people were involved in the production. The Kochavis sourced tanks, trucks and motorcycles from the period for the invasion scenes. They developed a camera that the actress could hold like a phone.
In her diary, Eva gave vivid expression to her inner secrets, hopes and fears as her world shrank. Soon after the German invasion, Jews were forced to wear yellow stars and were only allowed outside for one hour a day, between 9 a.m. and 10 a.m.
When the police came into Eva’s home to send her family to the ghetto, she wrote: “Everything happened like in a film.” Once there, she described the notices pasted on every house with rules and prohibitions.