Am I mistaken or is the British Monarch not even allowed to disallow an Act of Parliament? She has to sign it.
Correct.
But then you know your stuff and don’t start wailing about the Queen doin’ nuttin’ like some here.
No she doesn't.
She can refuse, which means that she has lost confidence in her government.
It could trigger a general election.
She would rather be Queen than be right.
You are not mistaken,
Americans are just appalingly ignorant of how every nation is governed.