Must thank everyone who have tried to assist me with this puzzle and have taken the time to do some research on my behalf.
I am inclined to believe now that she may have divorced and remarried as 'Beg' posted. DENT being her name latterly. The death record for her in 1977 has her parents Christian names correct and her given names which are unusual in themselves also correct. The record unfortunately is pay for view so couldn't get more detail from it.
The electoral roll also seems promising so hopefully some one doing some research that has full access to it will be able to check it out for me.
Need to check out now when she divorced and remarried?

She was still married to Arthur W Preston in 1928 according to residency list for Wellington. He and his son returned to UK in Sept 1932. To Lucy 2, Giblet, Beg, and Twiggy Tree, my total thanks and appreciation on this. If I can ever be any help to anyone on Scottish or UK Boards please let me know. Kind Regards C