Ew, this has been going on a while and I'm sad I didn't jump in sooner! With that said, some points:
1) I, personally, love playing a character that's coldly antagonistic towards SA (Halleria). Ever since Springdale (Empire), when it was divided through SA politicizing, to Thulsoma, to Summerdale (which eventually fell under the SA shadow), to Averoth, Caerwyn, and now Asylon. It's been a very fun time, and now Allison has a realm right next to my duchy. Muahahaha.
2) About the issue with Lavendrow and Demyansk --- the thing is, Caerwyn didn't completely fall to Astrum/SA. Itau seceded, Golden Farrow was lost, but Via survived and pledged allegiance to Asylon, thereby carrying whatever remained to the latter realm (regions, claims). It's somewhat similar to the real-world issue on Sabah, Malaysia - the region, which was leased to the British East company (who then included it in the creation of Malaysia), is owned by the Sulu royal family, who are Filipino citizens. Claims supersede nationality/allegiance, but what to do about that, of course, depends wholly on the individual parties.
Legally speaking you probably have a point. However, Astrum doesn't see it that way, and making this argument would require Asylon to be willing to back up such a claim. I would be surprised if they were. They've already benefited immensely from this turn of events (although having Allison as a new neighbor may come back to haunt them), so it's really not in their interest to sour relations with Astrum and Kabrinskia over a couple of regions that they were willing to sign away to Terran in the first place.
