Would you consider removing a couple of the photos you added to memorial #19554678, Margaret Raye McKissick? There are 2 of the cemetery entrance as well as the building that are keeping me from adding personal photos.
I very much appreciate you taking the time to photograph her marker.
Elizabeth Culp photo request There is an excellent website that has all of Andrew County headstones photographed. This cemetery looks like it has been pretty exhaustively cataloged and she is not listed. Nathan is listed, but no stone found. I think it most likely, if she is here, that she is unmarked. Notice there are 3 "unknowns" listed though. Difficult to tell, but one of them could be her and/or Nathan.
Hope this helps. Please consider removing the photo request if you feel it improbable that a headstone will be found. This is a pretty remote area and the directions to even get to it are a bit forboding! :)