Having to tolerate the Calistrians is, in the Conde Francisco Ledo Curto de Acevedo's considered opinion, the absolute worst part of the entire convention - a grand achievement, for an event so full of events that drive him to distraction. Her fellow on safe roads may have narrowly surpassed her place as the most contemptible example of the breed, but he has more than enough disdain for them both.
Unfortunately it is not exactly trivial for even a count to gain access to the royal antimagic cells, and while he has no idea what in the world the radicals on rights could be planning here, he's very confident he wants to help get Urban Order's proposal on incarcerating wizards to the floor first. Rescheduling his visit risks undermining that, to say nothing of the chance that she would be there then too, or the fact that he would rather die than humiliate himself by seeming to flee from her.