From one side, the sources for this story are very unclear and very controversial. Even in Shea's books, there is another story about the death of Fatima (Radia Allah Anha). no one killed her while she was living among the people who were raised by her Father or at least among her tribe (Quraish). She has, at least a hundred cousins
On the other side, the author of this movie (yaser kabeeth) is very controversial not only among Sunni Muslims but Shei Muslims.
For example, he can't visit Iran, Lebanon, Syria, Oman, and any other Muslim country. The reason is that his speech encourages hate and violence.
For non-muslims people. I advise them to find and read accurate sources because simply there is nothing untold about these important events that happened 1450 years ago.