>>28794180She doesn't officially have a revealed name, however based on her civilian clothes she is a Lass. She owns a Swanna and a Cubchoo, indicating that she hails from the Unova region. In Black 2 and White 2 there is a Lass with 2 Ducklett on the route Cubchoo can be found. Her name is Misato, or Flo in the English version.
Another performer who owns a Nidoqueen spoke in the quiz episode, and the Japanese closed captions identified her as Queenko.
Based on these two things, my headcanon name for Swanna Girl is Misato Wanako.
Far from an official name, but it's the best she's got.
