There's a family pedigree on familysearch.org- which aren't always accurate/sourced, indicating she was the daughter of George Cosper and Emeline Kimmel. Her birth is c1854/5 OH or IN. This would make her the child in this census.
Source: "United States Census, 1860", database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M4F1-RD3 : 30 December 2015), Lucinda Casper in entry for George Casper, 1860.
United States Census, 1860 Allen Township, Noble, Indiana
George Casper M 33 Pa
Emeline Casper F 27 O
Lucinda Casper F 6 O