Missing on 1871 census for family with Isaac and Betty, so assumed married (age 25) and left home by then.
In 1871, (another) Sophia Mather from Matlock, Derbyshire married John Orchard at Manchester Cathederal. Between 1871 and 1886 Sophia and John had 9 children (including two pairs of twins) at Newton, Manchester.
In 1899, Sophia married John Moran (civil marriage), and then probably imigrated to Dakota, USA - tbc.