Wow Taryn, I totally misunderstood what you said about Find a Grave. So sorry!
Here she is on Find a Grave:
Sadie J Senasac Armstrong
Birth: Sep. 10, 1888
Mapleton, Blue Earth County, Minnesota, USA
Death: Nov. 30, 1940, Shelby County, Texas, USA
Daughter of John Senasac & Frances Breaders. Wife of Robert Lee Armstrong married 23 Oct 1904 Naco, Naco County, Texas.
Spouse: Robert Lee Armstrong (1884 - 1968)
Lone Star Cemetery, Nacogdoches County, Texas, USA
1888 Sadie is born in Blue Earth County MN, father John Senasac.
1890 Cypriem Senasac is on the 1890 Civil War Veterans Schedule in Blue Earth County. He has a son John Senasac b 1872 who would be about age 16 in 1888.