Looking for Gravesite

I have been researching my family history for almost 20 years and I'm desperate to locate the burial plot of my great-great Grandmother Abigail Gilpin-Rutter. I know her husband is buried in Pleasant Hill Cemetery on State Route 327 in Ohio on the Ross/Hocking County Line. There are a few Gilpins in there with homemade stones with the last name only but, I have no clue as to where she is. I do know she left estate records in the Ross County Courthouse but, I have no proof as to where she died. In the 1900 census she was in Ross County with her two youngest sons and she died 20 Dec 1908.