Don’t tell a queen not to do something.
It is not an effective way to get something done.
A queen is not inclined to obey.
A queen does as she pleases.
If you want her to do something, you have to be crafty, use your best wiles.
You’ll want to make her think it was her idea.
Don’t tell a queen no.
Don’t give a queen an order.
Don’t make a demand.
Claudius ought to have know this attempt would fail. He ought to have simply taken the cup from her or had a servant do so, for some more official toasting. He ought to have spilled it. He ought to have realized Gertrude would never obey.