Audrey Pinder married in Hull in 1945.
There is a birth in Sculcoates in June quarter 1923 which could be her, but if you got her wedding certificate to your grandfather then that would have her Father's name to help to identify her.
If that Sculcoates birth is correct, her parents were Walter and Elsie Pinder, and she had a brother.
If you look for Walter and Elsie Pinder in Hull on 1939 census (just search for both their names without specifying any birth years, living in Hull, you should find them in a household with 2 closed records.
This would imply that their 2 children i.e. Audrey and her sibling may still be alive.
There is a man with the same name as Audrey's brother living in Hull on the 2016 ER's (but no age specified)