Surprised, that's what Adruin was. Most people would never admit their being wrong so quickly after a few exchanges. What threw him off more was that she wasn't automatically terrified of him being an evil angel, but what she didn't know, was that any stories she'd heard we're about him, because he was the only one. No others like him had been made, it was true loneliness, to be the only one of your species, and hated by your prediscesors. This is why he wanted friends, the cover the loneliness that he felt. 
"Well, while yes, you are correct about me being an Evil Angel, but any stories you've heard we're about me, because I'm the only one. Oh, and another thing, I do have to kill, I have to kill Angels, and Demons. That's only because they try to kill me though, I respond with equal or less force depending on the opponent. However, I've never killed anything other that an angel or demon. So, if you don't care about the past or if I've had to kill a few hundred of my brethren in self defense, then we're good. "