Just a guess.
It's gonna take some time but she isn't the type to hold it in for too long. Some asshole will push her too far and she will teach them a lesson. And then there will be some political fall out....sigh....
That is highly likely. Luckily he isn't crown prince and can leave the castle once his sister is safe. So hopefully they get to go back to their former lives
She followed him to protect him, although it is way out of her comfort zone. I don't think she'll get involved with political stuff or start strategizing whatever, Leon isn't trying to become king but needs to support his sister meaning he's in constant danger of being a hostage to bring down his sister and she wants to be there to help in in those situations.
iM SORRY LEON BUT I CAN'T HOLD IT IN ANYMORE SHE'S NOT GONNA BE HAPPY IN THE CASTLE I JUST CAN'T SEE IT HAPPENING. ;-; i mean dear lord i hope im wrong but i really can't see it. so far it just seems she's going along with Leon's whims like i feel like the both of them seemed way happier and content with the forest cottage life