Griffith's character a bit like Palin - underrated, mocked--
Griffith's character - with her soft voice and lack of official spy training - seems improbable, but she proves she can think on her feet and thus is allowed to spy in Nazi Germany by her new boss (and romantic interest) played by Michael Douglas.
She has an unofficial resume' - she can quickly think on her feet and act!
Yes, appearances and speech can be deceiving!!! Woe to the Nazis - who failed to look past the surface...of this frail appearing woman with the childish voice.
In situations where most East Coast grads of fancy schools (Harvard OR Vassar) might fail, Griffith survives---to successfully complete her mission with the aid of Michael Douglas's character. (Note - Except for maybe the last few minutes of film, Douglas is assisting HER!!!)
This film - and "Working Girl" - illustrate the blue collar young woman who might be educated but who gets snubbed by both women and men because she is not from the "correct" East coast families or "correct" fashionable colleges.