It's obvious she's hiding something. [ As evidenced by her perfectly-intact first floor setup, and her refusal to budge from her position near the stairs. But that's very much secondary to his grudge against the drow for tampering with Aen Seidhe blood, and for speaking to Astarion in a tone that he dislikes.

Folding his arms and frowning at the memory of her calling Astarion his charge, Iorveth spits ash out of his mouth. Ugh. ]

We'll do our due diligence after we get rid of her. Search the house, destroy her research. That should be sufficient.

[ And if it isn't, well. Iorveth is fairly sure that Lae'zel would understand if he said that he couldn't let someone insult him and live. After a brief moment to pull himself together, Iorveth reaches to take the hand that Astarion is touching his weapon with. ]

I'd tell you to do the honors, but it turns my stomach to think of her blood touching you.