101 of negotiations: ease into the hard parts, don't just drop the heavy changes all of a sudden. If you do...
But honestly, Anise has never been trained as a sovereign and it's known and clear that she'd make a bad sovereign no matter what. The best she can be is a benevolent despot and that is that.
However, her spouse to be has been trained her entire life to be a spouse of a sovereign, if not outright to be the sovereign-stand-in to a lacking sovereign, who can't handle their responsibilities. So why not at this point, when you have "two queens" just have the better queen take on the head of the state capabilities and have the more talented queen keep doing what she does best.
That way the realm has a good and educated philosopher queen and a philosopher queen to guide the sovereign (queen) and also instill her inventions into the institutions and economy.
Of course the main issue, all of this was SHOTGUNNED at the face of Anise, when she was at a very fragile mental state. Have you ever heard of I don't know, taking things at a piece meal and letting people recover mentally before having them tackle on heavy and challenging topics. Then again, if they did, I don't think the lil'bro would've ever rebelled like he did.
Where is Stańczyk when you need him?
Hey new chapter of: "How my useless parents are actually the cause of most my problems and they never actually get called out on it"
FUCKING THIS!
King is damn bad at reading their kids aside from punching the elder sister and mother is constantly abroads on diplomatic missions instead of guiding her children...
And then they lament, that their kids grew twisted?
SERIOUSLY, HAVE YOU EVER HEARD OF A DIPLOMATIC CORE OR A CHANCELLOR?
Especially the latter, you trusted the Duke enough for him to have high positions and for his heiress to marry into royalty, but you can't trust him enough to administrate the realm when you are busy actually raising the FUTURE KING/QUEEN?
Not to mention you have a SUPER TALENTED PRINCESS and YOU KNOW SHE IS FACING DISCRIMINATION FOR HER TALENTS and you DO JACKSHIT?
AAAH... you shouldn't ever look that deep into romance, you'll only find disappointment.