Adelaide married Ludoire Marie Thiboumery 1863 - I see this took place in London, do you have a copy of the marriage certificate?
I can see two children registered under the name Thiboumery, and on the GRO index with mother's maiden name Godin:
Marie, in 1862 (Islington)
Adelaide Marie Rose, in 1866 (Hackney)
There is also a boy in 1864 registered as Louis Thiboumery but mother's name is given as Isodin on the GRO index - may just be a mistranscription for a poorly written Godin on the original.
There are also some Adams children with mother's name listed as Godin:
Willie Francis Adams, 1876 (Mile End)
Robert Jonathan Adams, 1879 (Mile End)
I would guess that Adelaide's death may be the 1879 death of an Adelaide Adams in Mile End - the age matches up.
I can't seem to trace any of the parents or children on censuses other than this possible for Ludoire as Ludovic in 1861:
https://familysearch.org/ark:/61903/1:1:Q2MG-X4MJWhich of the children are you connected to / know about?
Now, there is also a marriage, 12 Nov 1887 in Paris (14e) for a Louis Thiboumery who was born 18 July 1864, in England, the son of Ludovic Thiboumery, aged 57 and residing in Sevres in 1887, consenting and present at marriage, and his wife, a woman listed in this record as Adele Felicite Rodin", who is listed as 'absent sans nouvelles' which I believe would indicate that her whereabouts were not known to her son/husband at this time.
This would match up with a birth in London of a "Adèle Félicite Godin", Sep 1844 quarter, St Lukes.
GRO index has her mother's maiden name as "Gittins" which would make these siblings:
Jane Elizabeth Godin (mmn Gittins), 1849 J quarter Strand
Letitia Gittins Godin (mmn Gittens), 1848 J quarter Strand
Although Letitia appears in the 1871 census and can be traced in later life, and Jane probably married in London in 1873, they are all very very difficult to find in any other records such as censuses! You may need some certificates to go further.
