Let me note also I am no master class student myself, I am 18 years old and will be attending my first term of real university degree study this fall, though I have been very succesful what concerns my audition for the university. Let me also note I live in the United States not in Europe(I am a U.S. citizen of Dutch heritage). She moved away from Europe obviously after getting a degree/degrees there.
As for the technique I believe, works, I have already said very much... if she told me a name for the technique I have forgotten but will ask again. However there may very well be no name. I have been studying with her for 3 years now and she has done so much for me. She doesn't want me to leave her but knows I have to, I will remember everything she says. All I can say is I do not believe the Arrau technique is good for everyone because it seriously hindered my wrist.(persistent sharp pain in my right wrist) I avoided going to a certain University because I knew they were teaching this technique there. I wish I was experienced enough to be able to differentiate between every single type of technique but before this teacher I was being taught by an amateur what concerns classical. I don't want to say anything wrong, it really is something you must show someone.
Maybe if someone says something specific I could agree or disagree but I can't go into specifics on exactly how I play. All I say is independent fingers and playing into the piano for your chords technique. Relaxed wrists and shoulders. There were other many good posts on this thread, just read around and be wise with what you believe.