In putting together a timeline of Lucretia's life, so that I can start researching the missing information, I have found her in the 1900 US Census living with her parents in Cocke County, Tennessee, Civil District No. 16.
Bertha's age is listed as 18 and Ella, her sister, is 16.
Bertha's father's occupation is as a station agent, and her brother, Thomas, is an assistant station agent.
In the 1910 US Census, Bertha and Ella are no longer living with their parents. I have not found them yet. Their father James died in 1911.