I didn't find anything about Lou Ellen Meador b. 1866 in Kentucky & lived in Barren County in 1870.
I'd look for a copy of her marriage license to see if her parents are on it.
If not, I'd look in local newspapers for the announcement of her marriage. Her parents names might be in it.
I'd do the same thing for her death notice. If she died when they were using death certificates and if the Informant knew that info, his name will be on her death certificate. Successful Searching!