Barbara Crawford Adams

Looking for information on Barbara CRAWFORD christened St Nicholas, Aberdeen, Scotland 1829. She married James Adams 1851 Sydney, Australia. No records of either of them on BDM for New South Wales records after their marriage. I have no idea where they went or if they had children or when they died.
Barbara was the daughter of Charles Crawford and Jane Morison of Aberdeen, Scotland who with their chidren arrived in Sydney on board the ship John Barry in August 1837.
Any help appreciated.Gidget