Looking for Kay Patricia Yates of Wollongong

I'm trying to find out about my cousin Kay Patricia Yates, who was born in Wollongong in September 1946. Her parents are Kathleen and Ron Yates who were married in Marrickville, Sydney. Kathleen's mother was Harriett Maud Mary Walker (nee Davison) from Bondi.

If anyone can provide me with any information, you'd make my day. :-)