I really can't find her.
Here are the boys I could find in 1871 (hopefully)
RG10/2481
Folio 60 p. 15
St James, Somerset
William Macey, head, 46, Servant domestic, b. Wilts Fisherton Delamere
Mary A, wife, 56, nurse, b. Som Keynsham
Millicent, dau, 16, Teacher, b. Som Dunkerton
George W, son, 14, Clerk, b. Dunkerton
RG10/2502
Folio 46 p. 14 & 15
Corston/Bath and Wells, Somerset
"Cottage in Street"
John Macey, head, 48, Farm Labourer, b. Wilts Fisherton Delamere
Ann, wife, 49, Housekeeper, b. do.
Sarah, dau, 15, servant, b. Stanton Prior Somerset
Samuel, son, 12, Farm Servant b. Marksbury Somerset
RG10/1944
Folio 31 p. 3
Milston, Wiltshire
"Coachman Cottage"
Charles Macey, head, 41, Coachman, b. Wilts Fisherton Delamere
Mary J, wife, 36, b. Wilts Durrington
Elizabeth E, dau, 13, scholar, b. Wilts Salisbury
Henry in 1871:
RG10/1958
Folio 80 p. 29
Fisherton Delamere St Nicholas
Stockton Road
Henry Macey, head, 37, Railway Lab, b. Fisherton Delamere
Harriet, wife, 29, b. Bapton
Dallas (??), son, 5, scholar, b. do.
Rosa, dau, 3, scholar, b. do.
Jesse, son, 1, b. do.
Henry Vancourt (?), boarder, m, 30, baker journeyman, b. Wilton
Tanja