Hi Shonagh,
Glad to be able to make your dad happy.
Had a look and found Minnie Dent in the 1871 census living at 1 Radley Row, Wellgate, Rotherham.
Thomas Dent 46 Louth, Lincolnshire, England Head Rotherham Yorkshire occupation Tailor
Elizabeth Dent 45 Rotherham, Yorkshire, England Wife Rotherham Yorkshire occupation Dressmaker
Joseph Dent 20 Rotherham, Yorkshire, England Son Rotherham Yorkshire occupation Plumber
Hannah M Dent 15 Rotherham, Yorkshire, England Daughter Rotherham Yorkshire occupation works at a sewing machine
Minnie Dent 6 Rotherham, Yorkshire, England Daughter Rotherham Yorkshire Scholar
And here she is in the 1881 census living at 111 Wellgate Rotherham.
Thomas Dent abt 1825 Louth, Lincoln, England Head Rotherham
Elizabeth Dent abt 1826 Rotherham, Yorkshire, England Wife Rotherham
William J. Dent abt 1846 Rotherham, Yorkshire, England Son Rotherham Widow
Mary E. Dent abt 1870 Brom Weston, Yorkshire, England Granddaughter Rotherham
Minnie Dent abt 1865 Rotherham, Yorkshire, England Daughter Rotherham occupation Gen servant
Wendy