Possible Clues:

• Naive woman that's sincere getting home first
• Popular source of personal information about posh young actress
• Young innocent at home with first book starts to understand English
• Innocent and genuine in coming to the fore
• Fashionable style with no right to clothe upper-class young woman?
• Artless young woman (on the stage?)
• Strangely genuine young actress
• Inexperienced girl's not faking it in going on top
• Unsophisticated girl in class given new direction in the end
• An innocent nun? Strangely that's (on the surface) masking a bad example