Spoilers for HBP, PG/K+. Narcissa and Draco Malfoy.
She tells him she's proud of him and then rolls down his sleeve so she doesn't have to look at the ugly black mark blemishing the skin of her perfect son, but even when it's hidden she can't stop herself from staring because she knows it's there.
When he leaves for Hogwarts that year she can't bring herself to wave at the train because it's all she can do to keep her hands from shaking. She thinks it doesn't matter because he's not looking out the window anyway but he is and he turns away from the glass in shame.