Eliza was born in 1817. She passed away in 1869.
Actual Tombstone photo confirmes Birth & Desth year. She is buried with her parents. Her husband’s grave was not found next to her.
I have the Acual Photos for this Eliza Houpt Spielman who died Dec 10, 1869 at age 59. "Find A Grave Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVV2-NHW9 : 13 December 2015), John Spielman, 1850; Burial, Keedysville, Washington, Maryland, United States of America, Mount Hebron Cemetery; citing record ID 17633188, Find a Grave, http://www.findagrave.com.