Just laying out some facts:
Possible parents marriage:
Marriages Dec 1874
Beavis Jane Poplar 1c 1209
BURCHELL Emma Poplar 1c 1209
Doughty Thomas George Poplar 1c 1209
French William Aviss Poplar 1c 1209
So possible birth
DOUGHTY, NELLIE BEAVIS
GRO Reference: 1878 J Quarter in POPLAR Volume 01C Page 734
And this her daughter
DOUGHTY, CECILIA NELLIE -
GRO Reference: 1910 S Quarter in ISLINGTON Volume 01B Page 183
This her marriage
Marriages Jun 1916
Doughty Nellie C Hicks Willesden 3a 590
Hicks William E Doughty Willesden 3a 590
Was her middle name Cecilia?
This must be her death then.
Deaths Dec 1972
Hicks Nellie 22My1878 Kensington 5c 1916
I see no Nellie Doughtys born in 1883 just
DOUGHTY, NELLIE -
GRO Reference: 1881 D Quarter in CAISTOR Volume 07A Page 638
DOUGHTY, NELLIE SANDERSON
GRO Reference: 1882 S Quarter in ECCLESALL BIERLOW Volume 09C Page 329
Nellie can of course be short for quite a few names - Eleanor, Ellen & others.