In 1870, there is a 17-year-old Emma Brunce (or, perhaps, Bunch) living with Andrew and Hulda. There is no indication about what her relationship might be.
Sources
"Vermont Vital Records, 1760-1954," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XFV5-59W : 5 November 2017), Andrew Hunter and Huldah C Haskins, 06 Nov 1821, Marriage; State Capitol Building, Montpelier; FHL microfilm 27,575.
"United States Census, 1840," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XHBS-7ZS : 7 September 2017), Andrew Hunter, Cortland, New York, United States; citing p. 18, NARA microfilm publication M704, (Washington D.C.: National Archives and Records Administration, n.d.), roll 275; FHL microfilm 17,184.
"United States Census, 1850," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M85J-JL1 : 12 April 2016), Andrew Hunter, Princeton, Bureau, Illinois, United States; citing family 633, NARA microfilm publication M432 (Washington, D.C.: National Archives and Records Administration, n.d.).