Well, I can't promise this is her (you'd need the marriage certificate to confirm) but it's the best match I see:
1861
RG9/2291 72 17
Leicester St Margaret
27 Guanel? St
George Buswell, head, 50, F W K, b. Lubbenham? Northamptonshire
Mary, wife, 45, Glove Maker, b. Counterthorpe? Northamptonshire
Obediah, son, 20, Bobin Polisher, b St Margarets Leicestershire (as all others)
Amos, son, 17, ditto
Ann, dau, 15, Cotton Winder
Jane, dau, 15, ditto
David, son, 13, Shoe Maker
Naomi, dau, 11, school
John, son, 9, school
Mary, dau, 1
William Morton?, brother in law, wid, 50, F W K, b. Counterthorpe Northamptonshire
+ 3 lodgers