Haldane Family Genealogy Forum
I am unable to find a Helen Haldane listed in the OPR (Old Parish Register) from Dunfermline.
If your Helen was married 1865 and that is her maiden name (and not a name from a prior marriage), then she was probably born prior to 1848 or so. There are just too many possibilities to narrow a search on name and that large a date range only.
If you acquire additional information, perhaps it can be searched. You might try the 1871 census for Scotland as it should list Helen, her husband, and their places of birth.