Question: What film directed by Valerie Red-Horse Mohl was based on the life of the first woman elected to serve as chief of the Cherokee Nation?

Context articles: Frankie Sue Del Papa
Wilma Mankiller
John Rogers (Cherokee chief)
John Martin (judge)
Mankiller (film)
Valerie Red-Horse
John Brown (Cherokee chief)
Bill John Baker
Chief Vann House Historic Site
Edna Beard

Frankie Sue Del Papa (born September 21, 1949) is an American attorney and politician in the U.S. state of Nevada; she is associated with the Democratic Party.
 Del Papa was the first woman elected as Secretary of State of Nevada (1986) and the first woman elected as Nevada Attorney General (1990, 1994, and 1998).
 In addition, Del Papa was the first woman elected student body president at the University of Nevada.
Wilma Pearl Mankiller (November 18, 1945 – April 6, 2010) was a community organizer and the first woman elected to serve as chief of the Cherokee Nation.
 A liberal member of the Democratic Party, she served as principal chief for ten years from 1985 to 1995.
 She was the author of a national-bestselling autobiography, "Mankiller: A Chief and Her People" and co-authored "Every Day Is a Good Day: Reflections by Contemporary Indigenous Women".
 Mankiller's administration founded the Cherokee Nation Community Development Department and saw a population increase of Cherokee Nation citizens from 55,000 to 156,000.
John Rogers was the last elected Principal Chief of the Cherokee Nation West, elected 11 October 1839 by the faction of Old Settlers who rejected the unity constitution of September 1839.
 The rejectionist faction gained no further adherents and the effort died the next year.
 Rogers was the nephew of previous Cherokee Nation West principal chiefs Tahlonteeskee and John Jolly.
John Martin (1784 – October 17, 1840) was a notable judge of the Cherokee Tribal Court.
 He was a highly educated member of the tribe, although he was only one-eighth Cherokee.
 A biographer describes him as blond, blue-eyed and a person who could easily pass for white.
 He had no formal training in law, but he was one of the first men appointed to serve as a judge on the Cherokee Tribal Court, which was established in 1822.
 After his term as judge ended in 1828, he was addressed as Judge Martin for the rest of his life.
 He also served the Cherokee Nation as Treasurer, He was also a member of the Cherokee Constitutional Convention that led to the formation of a real national government.
 In 1837, he removed from Georgia to Indian Territory, where he was elected as the first Chief Justice of the newly created Cherokee Supreme Court in 1839.
 He served until his death the following year.
Mankiller is a 2017 documentary film directed by Valerie Red-Horse Mohl and executive produced by Gale Anne Hurd, concerning the life of Wilma Mankiller.
 The film had its US premiere on June 19, 2017 at the Los Angeles Film Festival.
 It was produced by Red-Horse Native Productions and Valhalla Entertainment and is a presentation of Vision Maker Media for PBS.
Valerie Red-Horse (born 1959 in California) is an investment banker, business owner, filmmaker and philanthropist of Cherokee heritage.
 She is a former CEO of two Financial Industry Regulatory Authority (FINRA) broker/dealers, Native Nations Securities and Red-Horse Securities believed to be the first Native American female owned broker-dealers.
John Brown, formerly judge of the Chickamauga District of the Cherokee Nation East, was elected Principal Chief of the Cherokee Nation West 22 April 1839, after the Old Settlers decided to elect new officers to strengthen their position vis-a-vis the Latecomers under John Ross, in place of then Principal Chief John Looney.
 He served until a majority of the Old Settlers decided his administration had not gone far enough to accomplish a compromise with the Ross party, and re-elected his predecessor John Looney in his place that July.
Bill John Baker (born February 9, 1952) is the current Principal Chief of the Cherokee Nation.
 First elected in October 2011, Baker defeated three-term incumbent Chief Chad "Corntassel" Smith.
 Prior to his election as Chief, Baker served 12 years on the Cherokee Tribal Council.
 In 1999, Baker unsuccessfully ran for Deputy Chief of the Cherokee Nation.
The Chief Vann House is the first brick residence in the Cherokee Nation, and has been called the "Showplace of the Cherokee Nation".
 Owned by the Cherokee Chief James Vann, the Vann House is a Georgia Historic Site on the National Register of Historic Places and one of the oldest remaining structures in the northern third of the state of Georgia.
 It is located in Murray County, on the outskirts of Chatsworth in northwest Georgia, which has a commanding view of the land around it and of the Cohutta Mountains, about 10 mi to the east.
Edna Louisa Beard (July 25, 1877 – September 18, 1928) was the first woman legislator in Vermont; she was the first woman elected to the Vermont House of Representatives, and the first woman elected to the Vermont Senate.