[2] Her great-grandfather Henry Bartlett Grace served as a Confederate army officer and aided in the foundation of Graceville, Florida.

[7] After graduating from university she started teaching English in Campbellton, Florida and at Graceville High School.

[8][9][10] She later served as an American Literature professor at Chipola College for thirty years until her husband was elected as the 12th Lieutenant Governor of Florida.

[4] In 1986, she asked for the Health and Rehabilitative Services Committee in the Florida Senate to approve legislation that would place an additional tax on cigarettes to raise money for cancer research and treatment.

[20] After Mixson's husband left office they returned to their farm in Jackson County, Florida to raise cattle and grow peanuts, cotton, and soybeans.