Sorry but having a quick look at the site registrations details only available from 1908 onwards, for earlier dates you need to contact the Nova Scotia Archives
as per this info -
In Nova Scotia, records of births and deaths from October 1, 1908 and of marriages from 1906 to 1918 (depending on the county) are held by:
Vital Statistics
Department of Business and Consumer Services
PO Box 157
Halifax, NS
B3J 2M9
For information about the availability of earlier records, please contact Nova Scotia Archives and Records Management.
Nova Scotia
Nova Scotia Archives and Records Management
6016 University Avenue
Halifax, NS
B3H 1W4
Tel.: (902) 424-6060
Fax: (902) 424-0628
hope you can contact them, if you can find details of her marriage to George Dainton, then you can get her maiden name, and hopefully birth.
Good luck
Newbie