"Considering I paid for it, I probably shouldn't be completely concerned with hiding it. What, is Hellfire going to come and bomb my house because I know when you tell the truth?" She wasn't going to give him the specifics of her power, by any means. But she supposed it couldn't hurt to give that small tidbit of information, to differentiate between what she had going on in her head, versus something potentially invasive like listening to his thoughts. "I know you won't tell." It hadn't given her the impression that it was a lie, anyways. As far as he was concerned, he actually believed, at the moment, that he would keep it to himself.
"But it'd be a neat, and likely, quick way to get rid of me, wouldn't it? Since I'm clearly ruining your life by getting my hair cut at your job and forcing you to actually work." The horror.