Hi californialife,
You would need to check the Hill surnames in Jefferson, KY during the time she was born. That would involve tax lists, deeds, Last Wills, court case files, pension applications, et al. Hopefully one of those will link a Hill family to your ancestor, with a mention of her.
This website mentions the surrounding counties of Jefferson, in case they were not directly from there:
http://genealogytrails.com/ken/jefferson/You can ask for guidance about the documents held by these facilities:
Kentucky State Archives
http://kdla.ky.gov/Pages/default.aspxHistorical Society - Filson Library
http://www.filsonhistorical.org/ Jefferson County Clerk's Office, Louisville, KY
http://www.jeffersoncountyclerk.org/default.aspHopefully, either the archives or the library already have a surname file
and genealogies for Hill families from the area. That would be a nice break!
Best of luck ~
Kate