A prolific author, Keller was well-traveled and outspoken in her convictions. A member of the Socialist Party of America and the Industrial Workers of the World, she campaigned for women's suffrage, labor rights, socialism, antimilitarism, and other similar causes. She was inducted into the Alabama Women's Hall of Fame in 1971 and was one of twelve inaugural inductees to the Alabama Writers Hall of Fame on June 8, 2015.