I like the princess, she is an asshole but she has personality and i do think she cares for him in her own twisted way, but i do understand why Vera would choose a death match comparable to that hurricane of a girl.
If it was the young prince as the Aire i could see this going completely those thief sides, but that girl isnt a fool i think she has been preparing for the fact that she won't be a princess anymore (swordplay was underway already) but sure there is much difference when you cant push around royal authority.