I missed chapter 9 when it first came out, but now that I've read it I'm reminded of how tragic Soara's backstory is and how she hasn't really been allowed to move on from it, despite traveling with the dwarves and experiencing various fluffy things. A large part of the problem is that no one seems to acknowledge what she went through or what that means for her; they just moved on with their lives and expect her to fit into the new paradigm. Consequently, she hasn't had any chance at closure.
A particularly stark example of this was the introduction of the 3 generals. The dwarves react with, understandable, fear, but they also expect Soara to react the same way, rather than try to assure her that a fight isn't necessary or that they aren't here as enemies. I don't recall how much Soara has told the Dwarves about her past, so they may not know that she was specifically trained to defeat the Dark Lord, but at a minimum they should realize that she comes from a very deprived environment, is exceptionally powerful, and that her first reaction to danger or perceived hostility is to confront it. They just never seem to take that into account, except for when her strength is useful to them.
The picnic with the Dark Lord is even worse. He's the figure Soara has been raised to view as a hated enemy, someone thoroughly steeped in violence, without any claim to a peaceful life, just like her. However, unlike her, he's moved on and found a home that she has never allowed. Throughout the chapter, everyone treats Soara's distrust and unease as just her being quirky and weird, as if it's coming from out of nowhere, rather than a legitimate reaction; the dwarves even chastise her for being rude, but those are totally reasonable reactions for someone in her position and I hope her past gets addressed soon.