After a very long moment Erin remembers the obstacle to the facial expression she's trying to make; no eyes to stare at him with in blank surprise. "Siffleur, buddy, my dude, why would I know? Even if I did you're asking the wrong person entirely. Fairies don't generally conceive children, we're pretty goddamn famous for it. My people are more human than fae but even then, put a gun to my head and I'd say maybe one in a million of us is fertile. That's somethin' to ask like, the doctors, or a wizard, or maybe Ms. Friday."