Meritxell and Security would've reported unless they had orders not to, and there are very few people those orders could have come from. If they had reported, Carissa would've wondered why Meritxell, who didn't have Eschew Materials mastered (must have mastered it secretly) and not Carissa, who did.
Who gains by having Keltham have sex with someone Alter Selfed to look like Abrogail or a bunch of other people? What do they gain?
The idiots - Abrogail, it must've been Abrogail, no one else would've conceived of and done it without Carissa's approval - decided to get themselves some Keltham-descended children secretly. To - use as leverage against him? No, they must've known that wouldn't work - why, then, why make the case where they lose so much worse than it needed to be -
" - you could probably get Cheliax to hand them all over, if you point out your alternative is blowing the country up."