Okay, so that threw her for a loop (although the fact that Scout had a power did help make a bit more sense of the fact that her brother had met him through work somehow). Not only did Boo appear to not care in the slightest, but his siblings had gone out of their way to get themselves a power- to make themselves mutants in a sense.
She couldn't help herself. She let out a small laugh.
"I'm sorry. I'm not laughing at you. I just- I've been so scared to tell you, and I've apparently had no reason to be. At all. And I'm feeling really, really stupid." She ducked her head with a sheepish smile. "I'm- Er. Well, I'm a mutant, I guess. I have... X-ray vision."