To show Robert she meant to play the proper lady of the manor.
If only he knew if she were a proper lady or not.
"I feel the same way, sitting here just like a proper young lady."
Clearly, the wicked stage was no place for proper young ladies.
This was because, Murphy told him, he had never known a proper lady in the first place.
And, of course, she is, though like proper old ladies we do it only behind her back.
"So that you can grow up to be a proper young lady."
And proper ladies would be horrified at the very notion.
"A proper young lady always leaves something on her plate."
Are you trying to tell me you're not a proper young lady?