"If you didn't want to kill me, then why would you have such a dagger on forearm?" Chess asked, wanting to get to the point "Not answering is not going to get me to release you, and I have the advantage of being affected by the spell to prove the truth of my words.  Further, accusing you garners me no benefit if you are indeed innocent; I have absolutely<em>no</em>extrinsic motivation to claim you were attempting to assassinate me.  Not only that, but if everyone<em>else</em>will recall, her arguments - the<em>same</em>argument as to her innocence - is much less believable now through her own words... aren't they?  It's because of that spell, and why else would you need such a spell here unless you were trying to maintain a specific cover?"