I'm so sorry I missed this post! Yes, the Chiraktis Queen is difficult, but one thing to keep in mind is that you may have succeeded and not known it with her. She is arrogant and won't let on that you've convinced her, and will send you away. But if you play it out past that, you may find out that you succeeded. I'll give you a hint...if you end up leaving in the next scene with Rakchitek, you've actually done well. If it's one of her guards, though...that will eventually end up in a Game Over, though there's a little surprise at the end you may want to witness before reloading. It's not over until it's over :)
One other tip with the Chiraktis Queen is to forget everything you've learned with the other leaders. She obviously doesn't respond to the same arguments. Sometimes making threats and taking a strong stance is the only way to reason with a bully. ;)