Oh yeah, another detail I forgot to mention:
Lyrie mentioned that Mal's prison is a
Hedged Prison spell (I think that's either Arcana or Spellcraft to identify), a super duper powerful one. She managed to bluff Nualia into thinking that she did not know a way around breaking the spell, outside of finding some lvl 20 wizard to do it. An-Nur realized she was holding something back, but didn't say anything. Immediately after that, Lyrie flew the coop, so I'm assuming she didn't want to stick around to let the barghest out (I can't say that I blame her). Unfortunately, An-Nur didn't have a chance to confront her, and even if she did, I doubt Lyrie would tell An-Nur, because Lyrie HATES An-Nur.
So the good news is: Mal isn't getting out of there without some major help.
But, this guy is devious as fuck, so I wouldn't get too cocky around him. I don't know what he has up his sleeve by calling this meeting and am urging extreme caution, and no funny business. All I know is, we are only safe if we do not enter his prison. And even then, I wouldn't assume that much.
Part of the deal was An-Nur could not speak or interfere, but that doesn't mean she's not going to be keeping a close on BOTH parties for shenanigans. If either party seems ready to fight, the door is closing. There's still active runewells about, so she is very firm in her KILL AS LITTLE AS POSSIBLE stance.
Because who wants to deal with Sinspawn again? That's right, nobody.