OK, A4 envelope arrived.
But don't get excited.

Forty thousand pages, all in the most atrocious handwriting

New data;
Mrs Ennis departed from
ORANGE, NSW. 17th September, 1878. Reason stated as seeking medical treatment.
Two children with Mrs Ennis, ie; Emily and Martha. (so Emily did NOT expire in 1878.)
Resided with Mrs Medlar in Castlereigh St Sydney.
Shortly after moved to the house of Mrs Minty in Smith Street, Sydney.
Here she and co-respondent resided as Mr & Mrs NASRAL.

This is written three times in three different hands and is definitely NASRAL. I've tried several searches NSW from 1800 -1979. Absolutely no NASRAL.

Mr & Mrs NASRAL, with Emily & Martha, departed Sydney for Melbourne.
Son Albert went to Melbourne looking for Elizabeth and learned that they had gone to Adelaide.
I can find no evidence that the divorce was made Decree Absolute. Should be about 12 months after Decree nisi.
That's it. Very disappointing.

I did think for a while that John might have found gold at Hill End and there was maybe lots of money involved, but he didn't file for divorce for two years on the grounds that he didn't have money for court fees any earlier than that. So there goes that theory.
That's all there is folk.
I'd appreciate any input, but if the shine has worn off, I'll understand.
Leonie.