[quote=@rush99999]
Since she's been traveling with him on this caravan, does Miss Light know anything useful about the dwarf making threats?
[/quote]

I would say that since she's been traveling with him, she would know him to be the stern leader. While he's gruff and very grumpy, he does care about the lives of those who are in his company. He will not have anyone die if he can help it. 

So Miss Light does have the Insight to realize that he is angry because the Witchlight Carnival is not just putting the performers' lives at risk, but also all of the caravaners' lives at risk by proximity. 

Other than that, I would need a retroactive Persuasion check or a current Insight check. ^_^