I have researched the Zachariah White Hardage and Delila Emeline Peebles family and haven't had any luck with Lula Hardage or Lula Simmons. However, I did find this post on the Marion Co., GA GAGenweb site posted by Carla Miles in 2005:
The Marion County Patriot, May 23, 1902
The Marion County Patriot
Friday, May 23, 1902
Mr. Zack Hardage received a telegram last Saturday announcing the death of his daughter, Mrs. Willie Melton, which occurred in Worth County the 17th inst. The writer knew Mrs. Melton as a pupil in her early teens and could say much of her amiable traits of character as a school girl and doubtless her lovely disposition shown with more resplendence in young womanhood. I extend sincere condolence to the aged father and her entire family.
Is it possible that Lula is Mrs. Willie Melton? Brother William Davis Hardage was living in Worth County in 1910, so it is possible that his sister was living close by. I was unable to find a Willie or William Melton in Worth Co on the 1910 Census.