Ya love to see it. Rozemyne as an archduke candidate is in a position of less power than a prince, so you get kind of an underdog story. Also I love how her time as Benno's apprentice (maybe idea monster is a better term...) actually comes into play in shaping her interactions! She has two distinct advantages in her conversation with Prince Siggy: 1) she and Syl/Flor can plan out their verbal attack beforehand. 2) She has Siggy alone without retainers because of the sensitive location and nature of their talks. Having said that, she absolutely DESTROYS him. He says his top priority is mana for Yogurtland. She says great lets do an immediate Dedication ritual. He backtracks and says there's not enough time. She's like, oh there's time for a short notice marriage because of the lack of mana, but I guess it's not that important. She then continues to eviscerate his points one by one. Oh, well of course I'm concerned about Ferdy, he saved my life and taught me everything I know. And so on and so on. Benno, Mark, Otto, and Lutz would be so proud of our one-time sort-of merchant (really she was just the idea monster, but she still got trained).
She has gotten better at euphemisms; she downplays it in her mind a bit, but "what would happen if I were to lose control" is 100% a threat. But it's noble-speak and vague enough that she can play it off as her truly wondering.
Some other random thoughts:
-Prince Hildebrand trying to help her is interesting, I wonder what his help was going to be?
-Didn't the magic bunnies revert to Rozemyne's ownership when she dumped in the student Dedication Ritual mana? Is she going to accidentally get registered as a Royal by dyeing their foundational tools?