It is a strange census entry.
John Wild and family and a couple of farm servants and a couple of house servants seem to be one household.
Then another household starts with 13 yr old MAria Georgina Hartopp, described as daughter and then several younger siblings, then some adult relations (cousins, mother in law etc) then a governess, then a full household of servants (ladies maids etc,) incl cook Emma Shotter.
I would say that the parents, the actual head of this h/h are away, leaving the children in the charge of the governess and older relations. But the census enumerator has not designated anyone else to be head, just started the list with the eldest daughter and worked through the other rellies and then the servants in the usual way.
I would therefore guess that Emma does not work for John Wild at all, but for the Hartopps in the Big House.