Is the movie "Older than America" based on a true story?

It was inspired by events that happened to the screenplay writer and director Georgina Lightning.

"The film was inspired by events from Lightning's life. Her father, who occasionally had violent outbursts, had been quite silent toward her about his childhood. When she was 18, he committed suicide. This event later launched her on an exploratory quest, attempting to find out more about her father's elusive childhood. In the course of her explorations of her father's past, she found herself visiting the Native American boarding school that her father had attended as a boy and noticing the oddly large cemetery behind the school, with the names of so many of its young students etched onto the silent headstones. From this very difficult experience, the concept for the film emerged. The film was shot primarily at the Fond du Lac Indian Reservation in Minnesota."

(Wikipedia)

Georgina Lightning wrote, directed and starred in "Older Than America." The ideas in the film came from her research into her father's past.

https://en.wikipedia.org/wiki/Georgina_Lightning