I looked her up and she works at both the Bolshoi and Mariinsky/Kirov she is in the movie "Ballerina",a documentary about the principle ballerinas at the Mariinsky.
This variation is from the "Le Carnaval de Venise" pas de deux by Petipa that at one point became part of Act 3 of the ballet-pantomime Satanella. The full-length ballet (also known as Le Diable amoureux) was last revived at the end of the 19th century, but the pas de deux is often performed in galas to this day.
