Hadn't even looked at 1901 yet - Harriett is visiting mum and stepdad!
1901RG13/416 37 14
Lambeth, London
119 Hartington RdJohn Weaver, head, 60, work at home, b. Lanc Everton
Ellen, wife, 48, Laundress, b. Hants Southampton
Ada, dau, s, 31, work at home, b. do.
Harriett McAlister, visitor, mar, 22, Laundress, b. do.
Thomas McAlister, visitor, 5 mo, b. Portsmouth
(Errr, who's Ada

)
*****
Nearest I'm getting census-wise for Harriett, but her age is a little out:
1891RG12/416 14 26
Lambeth, London
23 Anstey RdWilson Wright, head, 36, Chartered Accountant, b. Yorkshire Kingston upon Hull
Maria, wife, 29, b. Leicestershire Ashby de la Zouch
Hettie Bailey, serv, 14, General servant, b. Hampshire Southampton