Thorfain,
You speak as though Kirna Lightfoot is a dangerous villain, though I've had no real reason to believe any actual malice on his part rather than him simply doing what benefits him most in a situation. Sure, he is a bit firm in his actions and might disagree with the adventuring community (and especially Fern) on occasion, as well as probably being not very pleased about the outcome of the Silver Frond Tournament still, but when it comes down to it, he's just a well-connected master merchant with a mind for his own success. Personally, that's alright by me.
Still, I'll admit that it is entirely possible and even likely that there might be more to Kirna's offer that you don't know, and you're entirely reasonable for refraining from participating in it for feeling there is inappropriate risk from what might be said. Words have Power, and every word spoken to Kirna will have an impact, big or small, intended or otherwise, so it is good to see you considering your words' implications before speaking them.
May the Light guide you, the Shadow guard your path, your Words have Power, and your Memories be Knowledge,
~ Gandian Ravenscroft
Magus of Tempered Rage