To be fair, the Prince does offer his first bouquet to her, but she politely declines... but then privately thinks that her affection is already at maximum. Damn girl, stop being so... whatever -dere applies in this situation!
Also, I like that headcanon, Lafate. Admittedly I may have just read some spoilers but that just makes me want to play even further. I like that this game actually has a plot, and that you can headcanon stuff about it. Seriously, this stuff doesn't happen over on the Dragon Tactics section...