Emma (nee MAGGS) and Albert GALE are still in Bristol in the 1861 census (mistranscribed with surname as Gate, but obviously GALE on the image)
Barton Hill, Bristol St George
Albert GALE 26, b Cornwall, Letter Press Planter/Painter?
Emma GALE 22 b St Georges Gloucestershire,
Emma Eliz GALE 5/12, b St Georges Gloucestershire,
The household listed just above this couple may be the mother of this Emma, or at least some relation. Households can be listed separately even if they are living in the same dwelling - eg, as in this case there is a widow and her son (and servant) while what may be her daughter and son-in-law listed as a separate entity.
Sarah MAGGS 61 Head, Widow, Market gardener, employing 9 men, 3 boys, 1 girl, b St George Gloucestershire
Joseph MAGGS 18, son, market gardener assistant, b St George Gloucestershire
Elizabh Andrew 61, servant, cook, b St George Gloucestershire
The 1851 census has this Sarah MAGGS with her husband William MAGGS, occ market gardener, at the same address as 1861. The Emma MAGGS married to Albert GALE gave her father's name as William.
Seems to me that this is almost certainly not the same Emma who came to Melbourne in 1852 - she is shown in 1851 with her family in Clutton, Somerset and listed as born Clutton (this census entry leaves blank the place of birth for all of the family except James. I would assume then, that they were all born Clutton, especially as Jamjar has given this birth reg index
MAGGS, EMMA mmn BANFIELD
GRO Reference: 1842 D Quarter in CLUTTON Volume 11 Page 91)
James Maggs 34, coal miner, b Clutton
Harriet Maggs 34
Emma Maggs 8
Joseph Maggs 5
Jamina Maggs 3
Judith