This particular variation pops up a few times throughout the show as Nina and Treplev keep referring back to her. She is supposed to be a younger, more hopeful version of Nina. She is the one variation that actual breaks the "wall" between the variations and the real characters. This Nina eventually becomes self aware and take ownership of her life. I pulled a lighter but still dreamlike piece of music to show that there is a chance that their fate could possibly be changed, but deep down, this is all still a variation.
This scene is one of the most unsettling in the show and one that is very different from all the rest. I wanted to raise the stakes even more by pulling a dark piece of music that builds as the variation Treplev gets closer to Nina. The point of this scene is to foreshadow some of the darker parts of Treplev's mind and what is to come.