By the way, just to theorize a bit on Warburton.
But perhaps he is in fact a spy, an Ul'Dahn spy, that is. And his daugther is, in fact, Ala'Mighan. Howso, you ask?
The tought came to mind that he was on a very, very long mission. In fact a mission so long of infiltration that he formed a family, even had a daugther. And only recently he came across this dreadful secret. And it brought danger to him and he had to escape, and even then with the empire's propensity of brainwashing that we see mentioned later- He'd certainly try to smuggle his own child out the place.

Of course, another thing might be that the entire secret he bringing from there is Ascilia, exception given that nobody notice that at all because it's deeply unexpected.