Solor-
I believe that Elena Vorantsova is a faculty member at Vaganova School. (And, if my mind serves my right - she was the instructor of the third year class girls, at least in June of 2002!)
Angelina, I think, but am not sure, is on faculty at the Universal Ballet Academy.
The boy - no clue, and Elena's friend - no clue either. Hope this helps... But, it may not be completely up to date and accurate...