The bar was...unusually reticent, in the lower layers of her mind (and she hadn't pried further; she wasn't sure if she'd be noticed; she wasn't sure if offending would get her kicked out, and regardless of whether it was actually safe it was safer than anywhere else she'd been for the past...three years?) so she couldn't be sure this place wasn't really a trap of some kind, but the higher layers gave a plausible explanation that didn't involve being a trap, and whatever else it was warm and dry and had food. Her guard was probably a full 25% down. Positively trusting, these days.
"Skill, inclination, personality--other stuff. Short version is Dad isn't one because trauma. He's--actually really good when it's an emergency, his mind goes sort of cold and clear, and he can do some damn impressive stuff when he's like that--Mom doesn't even have a scar, and she got shot in the lower spine once. Which...was kind of a good thing, actually, because when sorcerers and artifact users associate a particular state of mind with a magical action too much, the magic can start feeding back in on it and creating a loop. The clear cold thing sort of kicked him out of the one he was in. ...I didn't think it was relevant because it's really, really rare, and frankly you're...pretty much the opposite of the kind of person it happens to. Your notebook thing, specifically," she clarifies. "It's the kind of thing that happens when you don't pay attention to your emotions even as much as normal people do, most of the time."
"Yeah. He was pretty much only vulnerable to it because he was in a really bad place mentally at the time. I--still should have thought of it. And told you."
"They happen when a sorcerer or an artifact user has a specific strong emotion, and feeds that emotion into the use of magic--the way you'd feed anger into a punch, basically, or joy into a dance or affection into a kiss--on a regular basis. And then you start feeling that emotion a little more often, in a way that makes you want to do magic with it, and then that makes you feel the emotion more often, which makes you want to do more magic with it, and this basically usually ends either with you snapping out of it and being careful about doing magic while feeling that emotion for a while, your friends knocking you over the head and dragging you to a therapist--I'm being metaphorical here--or dressing in melodramatic cloaks and hiring henchpersons and getting thwarted by other magic users. If it's a negative emotion, anyway, the worst that happens if you feedback on a positive emotion is that you get annoyingly chipper, but positive emotions are harder to let get out of control anyway."
"It's okay. I'll keep a handle on it. And your dad should have mentioned this, too, it's not all you. And I would have asked but he surprised me, which is not your fault. Anything else I should know?"
"...Okay," she says after a few minutes. "If for some reason you're ever in my world, some magic users can tell various ways if you're a sorcerer or not, and some villains prefer to target them specifically--usually 'join me or die' kinds of things. Don't try healing someone with a spell you're not sure you have down unless it's enough of an emergency that fucking them up even worse won't make much of a difference. A sorcerer spell, I mean, so far as I can tell magical girl spells don't have failure modes like that. In fact, don't do any spells you're not sure you have down unless damaging the target is an acceptable outcome. You can practice spells in your head without actually casting them. If you have a spell down but you think you'll have it down even better later you might want to wait--fixing something perfectly that's been fixed imperfectly is much, much harder than fixing something from normal broken."
"For some reason being a magical girl is significantly harder to fuck up than either of the other kinds of magic; I'm pretty sure I didn't fail to warn you about anything on that front, at least."
"She wrote Sailor Moon. The magical girl genre predates the appearance of actual magical girls, which some people have suggested means that magical girl anime is somehow at fault for the kitschy designs."
"Ah. Well, at least it's not restricted to sailor suits per se. Although I guess mine could pass for one."