Well yes technically Arueshale may not have been telling the exact truth when she said the hag knew about the powerful demons. But since she was hunting Arueshalae, and closing in on her too - then if Abramo wanted that information, he did in fact need to fight the hag. So it wasn't quite a lie, either.

That is... not really a great way for would-be allies to deal with each other. But. After all, no formal contracts had been signed, no agreements made. Arueshalae offered information which Abramo wanted, and told him how to get it, and behold, he did what she suggested and now he has the information. (She didn't even mislead him about the risk involved - she did say there would be a fight.) It is not quite a trade; but - he did come out of the transaction better off. He'll allow it... once. If Arueshalae has any desire to work with the Crusade in the future, she will kindly deal honestly and openly with them, and offer all the relevant information and state upfront what quids she desires pro quo.

That's... not easy for a demon. It becomes a habit, after the first couple of centuries, to deal in deception and manipulation whether it's necessary or not. 

It's also more trust, even conditional and with an implied threat, than anyone has extended Arueshalae since - well, ever. Arueshalae is a little impressed, actually. And Abramo has even managed to keep his eyes on her face; not many men do.

Well really now, what is he, forty?

Abramo did actually notice that Arueshalae is, well, a succubus. But erotic attraction only gets so intense, the body can only respond so strongly! Sure, she's literally supernaturally hot; the fact remains that this is only say a 50% increase in hotness over that of an athlethic, healthy human woman in her early twenties. (Women are really super attractive to heterosexual men, strange but true!) There are lots of smoking hot women in the Crusade, even without anyone throwing Fireballs around, whom Abramo could totally drool over if he weren't, you know, a professional with like three ounces of self-control. And also fifty-mumble years old; he admits that in his thirties his eyes might have dropped downwards for a few seconds.

Then Arueshalae will totally join up! And promise to deal straightforwardly with Abramo going forward, Desna be her witness.

Desna's not actually the best goddess for that sort of thing (or indeed anything, since there can only be one Best Goddess), but they'll have to take what they can get.

Then they will search the Molten Scar for further clues. And Arueshalae can come along as the DPS in place of Lann, let's see how those pure ranger levels, ah, stack up. 

Oh really. Yeah how about five enhanced Vrocks, how does that stack up? 

Actually they go very nicely into the new area-effect spell Abramo has been itching to try out!

Banishment.

Calamity! We did not foresee this!

Indeed it is hard to see how anyone could, as prophecy is broken. Unless the demons know something Nenio doesn't? Tell her more!

...Nenio really must insist that Abramo not send her experimental subjects out of the plane, in the future, until she's had a chance to extract what they know.