Yes, you are right. Angelina Armeiskaya is a ballet teacher at UBA.
Angelina Armeiskaya
Prior to teaching there, she danced with Colorado Ballet and taught at its school. She also teaches at the Bossov summer intensive in Maine. After graduating from the Vaganova Academy she danced in Tbilisi and other Russian companies.
Sorry but you are wrong Angelina Armeiskaya does not teach at the Bossov Ballet I was at there five week summer program this year and she was not there.