Lucy Pollard is listed with the family in the 1851 Canada census.
"Canada Census, 1851," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWRT-2Z6 : 10 November 2014), Lucy Pollard, Fredericton, York County, New Brunswick, Canada; citing p. 28, line 14; Library and Archives Canada film number CSCAN1851_NBYKQU1851, Public Archives, Ontario.
It may be possible to confirm family relationships with Lucy by comparing test results with other carriers of her ancestors' mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Lucy: