Weaving a web

We're now home in Brisbane. While we were away a new Golden Orb-weaving Spider has taken up residence. She's created an intricate web between our balcony and a nearby garden tree. I'm calling her Golda. 

Golda's cousin (?) Doris is still in residence - see extra. She recently survived a bruising encounter with our house cleaner, who objects to spider webs on balconies. Doris has now created a new, larger, web. And created a new egg sac which I will deal with. This is her third!