Right have found Ann and daughter Susan on the 1851, there is also a daughter Jane; on the IGI there is her baptism in Brant Broughton, parents William Watkin and Susannah - ah could this be the mothers full name, that she shortened to Ann

Anyway here are the details:
Newark on Trent (HO107/2137, Folio 130, Page 19), transcribed on A******y as Walker
Francis Bennett, Head, Mar, 73, Weaver (Linen), Notts, Tuford
Martha " , Wife, Mar, 71 , Lincs
Ann Watkin, Widow, 46, Laundress , Notts, Newark
Susan " , Dau, 9 , Lincs, Broughton
Jane " , Dau, 2 , "
What a shame that census does not give the relationship between the Bennett's and Ann

Hope this all makes sense, as I am susposed to be getting ready to go out, so have rushed to get this info on here.
Kath