It would be interesting if they thought of her as Greek, because she's really not Greek at all, is she? I think she's, for the most part, German.
By great part of her roots, yes we can say she is german, but as she was living part of her childhood and her youth in Grece, we can imagine that she is greek by destination, as the daughter of the King of Grece, we can suppose that she learn an academic greek
For her other language is a little bit complicated.
First, as her fathers have to exile because the mondial war II for a while, in countries where people as them speak english, we can imagine that she began to speak english very early because the circonstancies and because it was very normal for a young girl of her generation in her circle of Society speak fluently english.
For german too. First as her fathers and in particular her mother are german it was an evidence that the Queen Sofia has to learn german very early too. Then as she finished her studies in Germany at the Salem Castle, she had to improve her german a lot.
It's very well know so that the Queen Sofia speak a good french so well to have with her husband, who is fluent in french, private conversations when people around are disturbing.
That is for the numerus and qualities of the langagges that she is speaking. But in watching at the video about the olympic games we can understand that she is not a great speaker in public and even, she isen't very found of that. It recalled me the Infanta Elena doing a speech in english, in New York, in front the spanish society. Her english was pretty good but the ton to express it was not at all in accordance with the speeche. In the same digression-I'm sorry, it's not the item- I beleive that the Infanta Cristina is these among the women of the Spain Royal Family who is the most skilfull to speak in public...before the arrival of Letizia.
Always before to watch at the Olympic Games's video the single one among the spanish speakers who was of international level to speak english and who did her speech in an english very fluent was Esperanza Aguirre, who first is a perfect speaker and - I was very surprise - absolutly fluent in doing her speech. For her the question is very clear, she like the tribunes, in a certain way it's normal, she is apolitic woman!
Very soory for my too long post but the video was too long so !