Who is female dancer (w. Zoritch) in 'Escape Me Never' clip?

From the database page for ESCAPE ME NEVER, I guess the woman dancing in the clip from it in BALLETS RUSSES is Milada Mladova. (Unless I'm remembering wrongly after three viewings of BALLETS RUSSES, they don't identify her in the B.R. movie, which seems odd. Or did I just miss it?) Mladova did dance with the Ballets Russes, and is listed as having been in the premiere of RODEO. So she must have been a fairly good dancer, but what we see of her in that clip is not impressive--those turned in feet busily bourreeing, but not turned in enough to think they're purposely in parallel. Anyway, does anyone know for sure if that's her, or who it is, if not?

By the way, much is made in BALLETS RUSSES of George Zoritch's beauty, understandably, but to me he can't hold a candle to Igor Youskevitch, who is only mentioned once. Unfortunately (and I'm not blaming the directors for this, as they couldn't much help it), the movie is somewhat skewed as far as who is spotlighted in it, by the facts of who was still alive as the movie was filming.