Sure she mayn't have lied about her age?? This seems the only possibility if the details make sense to you -
Dwelling: 16
Henrietta Balmoral
Cot Census Place: Kilmarnock,
Ayr,
Scotland Source: FHL Film 0203602 GRO Ref Volume 597 EnumDist 22 Page 13
Marr Age Sex Birthplace
Robert DOUGLAS M 38 M Dingwall, Ross and
Cromarty,
Scotland Rel: Head
Occ: Restaurant
KeeperElizabeth DOUGLAS M 32 F England
Rel: Wife
Jane DOUGLAS 11 F Kilmarnock,
Ayr,
Scotland Rel: Daur
Occ: Scholar
Alice DOUGLAS 10 F Kilmarnock,
Ayr,
Scotland Rel: Daur
Occ: Scholar
Elizabeth DOUGLAS 9 F Kilmarnock,
Ayr,
Scotland Rel: Daur
Occ: Scholar
Robert DOUGLAS 5 M Kilmarnock,
Ayr,
Scotland Rel: Son
Occ: Scholar
Annie DOUGLAS 3 F Kilmarnock,
Ayr,
Scotland Rel: Daur
Alexandra DOUGLAS 1 F Kilmarnock,
Ayr,
Scotland Rel: Daur
Marion MC
KINLAY U 18 F Ireland
Rel: Servt
Occ: Gen Servt Domestic
Mary
BURNS U 19 F Dalry,
Ayr,
Scotland Rel: Servt
Occ: Gen Servt Domestic
Louisa MC GLASHAN U 26 F England
Rel: Visitor