She's never interacted closely with them; breeder courts tend to be unmixed, none of them lived very near her tree until shortly before she was captured, Thorn only had a handful and they didn't talk to Promise about their families. She does know that breeders have all different ways of reproducing and they don't consistently involve two parents and definitely don't consistently involve the sort of things mortals do to have children. Actually, she's not sure if any of them involve that? She's pretty sure she's never heard reference to a pregnant fairy?