I agree, Dawn... but this woman, although she said she wanted "ferals", has only ever had domestics. When I first contacted her about my babies, she kept saying things like "Do you think they might become tame once they know us? It would be nice if they came into the house... I miss my old cat sleeping by the fire in winter. "
In short, I think what she wants are semi ferals or just nervous domestics who'll patrol the stables but still come home for tea.
So even if I don't manage to get these kittens 100% tame, they've still found a billet.
But once I've actually been there, I'm going to tempt her round to the idea of adults as well.
I'll tell her about the Olympic cats and that we were trying to get some for her before the kittens arrived. Now... a pair of them for the tougher ratting would be just the things to teach the kittens what being a farm cat is about.