Heh, luckily you didn't make that bet, then. Though, to be fair, a lot of people speculated for her to be someone from Kuro's clan. I think the most prevalent guess was for her to be Maeve.
I don't think Lilith has ever really been described before, yeah. At least, I don't recall an instance of that, either. :P
Whaaaaat, MC essentially jinxing things by thinking that? Preposterous! That would never happen! 👀