I have found an 1841 census record that shows;
Ann Perrett, aged 60, Independent means, born in county
Thomas Perrett, 30, Carpenter, born in county
Mary Perrett, 20, Female Servant, born in county
Richard Perrett, 15, Ag Lab, born in county
Bridget Miles, 3, born in county
All living in High Street, Erle Stoke, Wiltshire
HO107/Piece 1182/Civil Parish - Erle Stoke/Enumeration District 1/Page 11
Could this be her?
Kenny