I found an Etta Gillespie buried in Holleman Cemetery in Ouachita County, Arkansas. I searched for her at arkansasgravestones.org and found this burial. It lists her dates as 1868-1927. But I think that may be transcribed wrong. It has a picture of the tombstone and to me the birth year looks like 1862. She is married to an Ira Gillispie (1853-1939). Ouachita County is in southern Arkansas. So I'm not sure if this is your Etta. I'm not related to the family - just trying to help.