I'm assuming by from how they had to resort to a letter in her case, and the effect she has on the Prince's curse, that charms and curses are not quite so effective on our protagonist as they are on others, and indeed she may dispel them just by her presence.
@Purplelibraryguy:
I thought it was supposed to be that it must have took some sort of charm to keep the Prince and others from
acting on or
being aware of the fact that they hadn't seen her at all lately—despite, for instance, the fact that the spoiled Prince would normally be really quite upset about not being able to play with his new toy (I'm not convinced he's quite grasped the concept of "romance" yet, though he seems to be getting there steadily) and definitely would have complained to his advisor about it, and/or sneaked in a visit out-of-schedule, except somehow he didn't.
My (tenuous) working assumption is that the magic was supposed to work on her too, but it didn't because she's a budding sorceress or something similarly magic in her own right, and so the perpetrator, perhaps a bit bemused at this, resorted to more mundane methods (the letter of dismissal) to get her out of the way.
@TheDragonLord:
While it was confusing for a second, my impression of what happened is that it just happened to be that moment that His Highness came up behind her (and, them not having been in contact for a while, with his whole evil eye/miasma thing on full-blast).
@Amarrez:
It's unlikely that they all "outrank" the daughter of an Earl—there should be only one or two titles above that in prestige before you hit royalty, and there's probably only so many dukes and—rather, it seems to be recognized that she has no financial, social, or military backing and that her family is effectively "disgraced".
