Character Analysis
Lucius and Narcissa's primary role in the last couple of films has been to look pale and upset as the Dark Lord taunts them (and their son). And their situation is pretty much the same here. However, Narcissa does get a little bit of a "moment" when she goes to check Harry for signs of life after Voldemort has used the Killing Curse on him.
She's not even concerned about whether the Dark Lord has succeeded; she's only concerned for her son. When she realizes Harry is alive, she doesn't announce it—instead, she asks for information about her boy:
NARCISSA: Is he alive? Draco. Is he alive?
Then, when she gets up, she does Harry a solid and announces that the boy is dead. (Since he's still lying there, she seems to guess he's playing dead for a reason, and thanks him for the information by not blowing his cover.)
Sure, she demands that Draco join the Death Eaters when Voldemort declares his victory, but since she knows Harry is actually alive…is that really a legit request? We think we might give her a pass on that one.