Depends on her age. At three she’d study you silently, with great interest, but she wouldn’t see you as a real person. At eight she’d give you a fathomless look that would make you uneasy. At fourteen her eyes would be absolutely impenetrable, but by now you’d be beyond uneasy, because you’d know she was quicker on her feet than you, and more powerful. At sixteen, you’d be fascinated, but frightened: at this point she has a reputation for the uncanny, for killing people or having sex with them, and no way of predicting which. And as she’s the niece of the most powerful king in Britain, it would not pay to even try to mess with her. Towering mind, a will of adamant, and a mother who is beautiful, subtle, and ruthless. You’d have to be very, very nice to her and very, very careful.