"Shut up, William," she replies, though there isn't any real malice behind it. Maybe she just doesn't want to piss him off while Modomnoc's in such easy reach of his hand, or maybe she can't muster much in the way of general ire when their respective animals are getting along. She doesn't really want to examine her feelings about all this too closely.

Besides, the truth of it is probably even more ridiculous, because it hadn't even been a deliberate pun (though that's what she'd taken it as at the time). Charlie had just called every kid who came into the coffeehouse 'sunshine,' and since her mom started working there, she'd been there the most often. By the time she realized it hadn't started as a special nickname for her, it had accidentally turned into that very thing.

Well, whatever. At least she didn't earn her nickname by torturing people, so she's still got the moral high ground, here.

His next question throws her, and she blinks. "… What?"