Regarding the belief that the Stanleys also went by the name Carter, there's some suggestion of this in various newspaper items.
Could this be Emily's father or brother?
Horsham, Petworth, Midhurst and Steyning Express
03 February 1863
Havant
- Vandelo Carter Stanley
- charged with stealing 3 baskets, leather, cloth, pillow tick
- property of Samuel Alfred Pycroft, landlord of Ship Inn, Emsworth
- case dismissed
- Pycroft then charged with stealing wood
- property of London and Brighton Railway Company
Chichester Observer 18 July 1888
Threatened by gipsy
- Vandelo Carter alias Stanley
- gipsy
- summoned for using threatening language towards Alfred Spratt
- Spratt, under bailiff of Chichester County Court
And there's a few that reference a Harry Stanley alias Carter (or vice versa). Could this be Emily's brother?
Petersfield Express 21 January 1879
- Night poaching case
- Henry King and Harry Carter alias Stanley, aged 35
Hampshire Chronicle 04 July 1885
- Harry Stanley alias Carter
- charged with breaking and entering house
There's some associated criminal records for the above, which also have the names Stanley and Carter.