Also can you find a Sarah Smee anywhere in any of your census sources? We have found that at Agnes Jones marriage to Charles Barfield in 1875 his three sisters were witnesses along with the lady called Sarah SMEE - about whom we know nothing. We are hoping that she will be Agnes's witness and may give us more clues about her. Probably best to look in the 1871 for Kirby to start with.
Interesting! Is one of the sisters called Louisa?
She married George Deex (spelling varies with Deeks) in 1877, his uncle David had married Ann Smee in 1851, Ann had a brother Joseph Smee (1835-1897)
The only Sarah Smee around at the time so far as I know was a "Sarah Smee " who was the mother of Joseph Smee's daughter Mary E(?) Smee.
I don't know who Sarah was because (deep breath)
Joseph married his second wife Hannah Hunt in 1871, Hannah died 1872 and Joseph and Sarah (born Great Oakley) and the baby had moved to Rotherhithe by the 1881 census - Mary Smee was baptised there in 1882.
Even more confusingly "Sarah" is 33yo in 1881 but has leapt to 58 by 1891!
Could Sarah have been another Barfield sister?
Mary E Smee was born at Great Oakley 27 Feb 1874. No birth registration as a Smee and presumably no point in looking for a baptism in Great Oakley.