Oh la la, these were some fun ones to read! I wont spoil what is right/wrong, but I will clarify ones that are less game mysterious and more me not accurately conveying the info I wanted.
I can see how this one is less clear, but the regeneration is part of the shapeshifting. So not unique to Lily, and known to Clair.
So on this one, Clair doesn’t know they are “fake” but she does know something fishy is going on. When she first went in, she thought she won the jackpot, finding all the Apostles at once. But when Envy comes in, that’s when we see Clair drop the ‘brainwashed act’ and get confused. She knows for a 100% fact there can’t be a new Apostle of Envy, yet here one is. She’s wondering if there is a fake Envy here, then are the rest of these Apostles fake as well? An answer she will soon find out as she took 2 of the parody Apostles alive.
Ah, thank you for noticing! Yes, that nailed what I was trying to convey with subtext. Hair being so important to elves as a culture, so giving a small bit of that hair is a significant exchange. And Nullen are considered unfit to breed, and are so excluded from the custom.
Thank you again for your theories! They were fun to read!