Thanks for the quick response

She married Frederick Burchett. I found a wedding record for him registered in Brighton 1903. On another record I found it in March 1902. There was no record for a Ada Graimes.
Her brother I believe is Alfred Graimes born June 1897 in Brighton.
I have found 2 possible death records for her. The most promising is Sep 1916 Hastings, aged 31.
She had a child (my grandfather) named Alfred Cyril Burchett, born 1906 in Lewes.
I found a marriage record for Ada Funnell in 1903, the only Ada to marry the same year as Frederick. I have done some more digging and found this thread:
http://www.rootschat.com/forum/index.php?topic=395204.msg2660313#msg2660313Funnell and Graimes mentioned in the same thread.
My head is hurting from trying to track all of these names and dates but I am starting to work on a theory that she re-married or that even my grandfather was born out of wedlock? Are these common scenarios in the 1890's/1900's?
Thanks,
Martyn
Update: I have found her on the 1911 census. She lists her birth year as 1888, born in Brighton. Married in 1904 to Frederick Burchett who is a groom. Still cannot find an original record for her birth or marriage with her maiden name.