Eil'lyn listened, but hardly seemed to believe the drow before her. "You answered one question, I asked two. If you have left your ilk as you claim, tell me why you were in the forests. Why would you leave your kind?" She asked suspiciously. She didn't believe he was speaking the was speaking the truth, but she couldn't fathom why it would bother with a lie like that, nor did it seem completely impossible. 

One thing that gave her reason to think he hadn't lied was his current reaction to small amount of light filtering through to the cell. Most drow would cower from it, be completely unable to see with it blinding them, but he seemed to have some tolerance, however small it may be.