True, though they still wouldn't think the Mok'tagar would definitely be after them because of the false trail we left. How much more they'll bother to prepare then, well it might help them a bit. They also might find it a little odd that we went out of our way to tell them, especially since as of now we're at the least, rival factions. And they're a faction that's kidnapped demons before, so why are we looking out for them, not accusing them of her disappearance in the first place? Even telling them that she's missing seems to be giving away a pretty big hint, something we'd usually deal with in-house. Sure, we could make a full blown production of it, a script, demanding access again to 'search for Kathy', reluctantly 'believing their claims of innocence', then warning them, etc. but that seems like a fair amount of work.