From the article:

Director Kaouther Ben Hania's re-enactment tells the story of six-year-old Hind Rajab, who was killed along with her three cousins, aunt, uncle and two paramedics who had come to their aid after their car was fired on by Israeli forces in Gaza City in January 2024.

The piece, primarily about the film's reception at a festival, is very definitive on who killed Hind Rajab, her family, and the first responders. It is also clear about the IDF's initial claim that they weren't involved and their subsequent "further investigation" stance.