Leareth sits down, heavily. After a moment's thought he casts his last remaining Lesser Restoration.
It doesn't make sense... He doesn't even have a theory, yet, just utter confusion.
- After long seconds, he thinks to attempt the interworld version of the communication-spell, anchoring it not just on Carissa but on the bracelet Urtho made for her, the newer version that lets him channel not just shields but arbitrary magic. Even that isn't enough to reach Golarion from here, but if she's not in Golarion right now - it doesn't make any sense, he remembers saying goodbye to her and she was just as confused by the entity that Urtho and Ma'ar chased as he was...
<Carissa?>
It doesn't work.
This isn't surprising, and it doesn't clarify anything, and...
Oh.
Now Leareth feels very stupid, for not having thought of it sooner. He knows that the multiverse contains, apparently, multiple instances of the same person. Not just the same the way he and Aroden are, but literally the same - albeit at vastly different moments in time, for the Velgarths he knows of, but that doesn't have to be true, and he does know two Urthos...
He takes a few deep breaths, and then heads for the crystal ball.
He doesn't try to scry for Carissa. Not his Carissa. I want her, he tells the spell, I want this woman - her name is Carissa and she was just here, she said these things to the Elves...