Lol, maybe it's because I wrote it badly but I'm sure there is said that Klein helps her to get into form with training, and more than once it's said that Klein views Willow as his surrogate daughter he helped to rise... Willow belongs to someone other, any who read previous fic know to who... And even if not, why it would by ntr? Willow and Aegis aren't yet in relationship other than mother and son.