https://dereferer.me/?https://www.youtube.com/watch?v=jJ61W9G8uvA bite plate?
Looking at that video and some of her others, and she doesn't have a biteplate. Her upper incisors are tilted so far forward that they're pointed almost straight forward. You're seeing the backs of them and the roof of her mouth. I scrolled back a ways, and in a video from June 2023 they aren't tilted out like that, so I don't know what happened to her.
