Keltham is pacing by the entrance to the fortress; it is not considered safe for him to go any further, let alone outside, he would not be sufficiently scry-warded.
...if she comes back and everything is fine then he can probably give up on terror of random tropes, right, the conflict didn't happen with the Queen, Asmodia does not seem to have superpowers. If Carissa is no kind of hidden cleric and her afterlife arrangements go fine and their romantic options contract proves not to be a setup for some huge awfulness, he'll be able to say that all this trope business is more the sort of thing he ends up calling afterwards than the sort of thing he can call in advance, and he should be less afraid the next time he thinks up an advance prediction of something terrible.