"He appeared suddenly at the Worldwound - uh, there's a big hole that opens to the Abyss and demons pour out of it, I was a staff wizard with a company defending the world against it. He recalled having just died in his own world, and so he had this theory that if you die, you will experience being suddenly somewhere else in the universe; it's not that suddenly appearing people will have usually died, but, if you're going to die, you should expect suddenly appearing somewhere." She had all kinds of complicated skepticism about this position but trying to do novel thought on anthropics without her headband just seems like a waste of time.
"He was Lawful Neutral, and he wanted to teach all dath ilan's innovations in Golarion and make a lot of money. But we thought he probably wouldn't work for Cheliax if he knew about - well, you know, all the ways a Lawful Evil country inherently is - he was very naive - and he definitely would do something about Asmodeus if he knew about Hell. - that's the Lawful Evil afterlife. Asmodeus doesn't run it in the interests of His slaves, obviously." This is why she was going to overthrow Him. "Anyway, we deceived Keltham for three months, but then he figured it out and exercised his compacted right to depart, and I was in charge of managing the project in his absence."
Except she realized that Keltham's arrival had changed the game and they had an opening to make Asmodeus make better use of souls, and she was - fighting on the wrong side, if she wanted that to happen, she'd rather Civilization win more concessions so long as the subsequent fight didn't destroy the world - she was worried it might. Keltham is terrifyingly cavalier about destroying the world. He wouldn't be, if he knew, if she could tell him, that most places are worse, but she's guessing she can't contact him. It might be millions of years later or in an entirely different universe or both.
"Anyway, I had some disturbing realizations that made me less useful to my superiors, decided to set myself on a more practical course and then erase my memory, and I was just doing that, from my perspective, when I wound up here, which is what I'd expect to experience happening - or really I'd expect to be stopped by Security, if that happened in a hundredth of worlds, but in worlds where the spell went off, I'd expect something like winding up here - but that doesn't at all answer your question of who sent me, it's entirely useless for answering that." None of that is going to make any sense to someone without prior exposure to ilanism. He's going to assume she's insane and a useless slave.
"...but all of that was the product of very unusual circumstances, my lord, and until Keltham arrived I had no history of being heretical or difficult to control, and I am no longer under those unusual circumstances and will not be rebellious or difficult again."