In 1870 she and her parents were living in Winnsboro (Fairfield County, SC).  In 1880 she was living with her parents in Shiloh Township (Sumter County, SC).  See the 1895 SC Rand-McNally Map.   Some details about the family are recorded are recorded in My Kennedy Ancestors of Fairfield County SC.  

She married Charles Henry Cox probably between 1881-82.  They had two children, John William Cox and Alma Irene Cox.  A third child, an infant daughter, died on January 27, 1895; Emma died several weeks earlier, in early January 1895 or late December 1894, as proved by a very brief entry in The Watchman and Southron (January 30, 1895) shown below.  After her death, Charles is said to have left his children with his wife's widowed mother (Emma Louise Watts Kennedy) and went to his brother, Nelson Cox, in Bainbridge, Decatur County, GA.