"There may be things set up that don't require anyone to deliberately activate them and will still be in operation even if everyone is stopped. I don't know if the queen is smart enough to have arranged not to know about them all herself; attack from this angle is almost always impossible on a couple of levels, but she might have done anyway. Certainly no one vassal will know about it all just because the palace has stood for thousands of years and there's been turnover. Having her shout may be a bad idea - if there's someone away on an errand and they come back to see everyone frozen in place they'll know something's gone wrong. And in case there is something like darts set up and you get caught again I definitely don't think you should have her advertise the order to all of her vassals in range, or you'll wind up caught by it too."