"vous êtes une amie": you are a (female) friend;
"vous êtes bons amis / bonnes amies": you are good friends ("bonne amie" may also have the sense of 'girlfriend')
"vous êtes bien une amie ?" are you really a friend?
Et vous êtes une belle fille - and you are a beautiful girl.
you are a pretty woman (it should be - vous êtes)
You are a star my sister
Vous etes une tres belle femme
My friend, you are a beautiful girl.
you are like a (female) dog...
You are a sweet woman=Vous etes une femme douce
If you were a nasty/wicked/bad girl
Vous êtes vraiment, une belle femme
It means- You are a rose for all to see
'(vous) présentez une amie à votre père' means '(you) introduce a friend to your father'. In that case the frined is a girl, as amie is feminine.
In English the literal translation reads: "You don't speak any German; you are a fraud."