[ztetranz]

I don't think the Queen instructed the Governor General to do that. He made the decision.

I'm old enough to remember it and remember a statement from the palace saying something like "The Queen is watching events in Australia with interest" but I don't think she took an active part.

I quick search reveals this. I don't know this site but if true then some letters seem to confirm the above. She told the GG to obey the Australian Constitution.

https://constitution-unit.com/2020/07/16/palace-letters-show...

[aspenmayer]

This is also relevant, if only to illustrate that the incident had more going on than it appeared on the surface:

https://en.wikipedia.org/wiki/Alleged_CIA_involvement_in_the...