I'll say "adieu." Good-by is so common.
[Everybody laughs. Peter goes out with the Governess. Marie and Cecilia move slowly toward the fireplace and sit down in front of it.
MARIE
Of course, I have come to ask for something.
CECILIA
Well, go on.
MARIE
There's to be a concert at which they want you to assist.
CECILIA
This season?