I'm not sure. It depends on the specific details and context of the 'Moon Flower' you're referring to. Sometimes stories are based on real events but with fictional elements added.
Flower Moon may have some roots in reality, but it's often a blend of fact and fiction. The author might have taken real-life situations and added fictional elements to make the story more engaging and complex.
The Killing of Flower Moon is not a true story. It could be inspired by real events but has been modified and dramatized for the purpose of entertainment or artistic expression.