The thing about Félix is that he doesn't really like anyone. 

On the one hand, this is odd. Élie's going theory is that familiars are formed from a little portion of their wizard's own soul, and he's not himself a misanthrope. Of course, who's to say what he would have been if he hadn't made Félix when he did – just fifteen, lonely, and terrified. It's possible that the kernel of Félix's intelligence is some portion of his spirit which he wanted, then, to separate from himself. If true, the theory has implications for the nature of familiars in general, but he's written to his friends in Quantium about their familiar's personalities and hasn't yet gotten any responses. So for now, all he has to work with is one surly magpie – and Wishbone, who's obviously some completely different sort of thing – and Félix always insists that he's a perfectly rational creature and would like anyone who proved themselves to be worth his time. 

But for now, Félix doesn't like anyone. So it takes him some time to realize that he particularly doesn't like Naima.