Alice's argument makes sense to Longstret. The Kallisti's reason for being is tearing the social fabric around him. A presence of such person is not welcome in any but the most anarchistic of Domains. Although that they were specifically named probably meant it was some personal slight, in the end it made no difference - the law works, because the Prince says so.
"So His majesty is a newly-established spiritual seeker? Interesting."
It was. To leave all the riches and profits of the First Estate for dusty tomes and esoteric theosophy was quite unheard of.
"'I thank you for your answers and hospitality. I look forward to working with you in the future, especially on that Brood captive you have. I think I'll stay here for a bit more, familiarize myself with the place and then call it a night."
If Cross or Alice want to stick around, Longstreet has no problem with it. If not, he'll stay Below for another hour and then leave.
Since we have a new Haunt in the Domain, I think we could wrap it up here, and maybe start another Necropolis scene with Cynthia. Or we could continue here. What do you think?