I've seen her before in different kata. Amazing. It is not mere copying of mechanical steps. Her body position is great, and many other things. She is not a mere copy cat, she is actually doing the kata, and kankudai is a difficult kata. So, clearly a child prodigy, a product of talent and a dedicated teacher.
Rika Usami, an adult yes, is another one of those amazing female karate experts:
That's not fake kata as we so often in jûdô today.
"The world is a republic of mediocrities, and always was." (Thomas Carlyle) "Nothing is as approved as mediocrity, the majority has established it and it fixes it fangs on whatever gets beyond it either way." (Blaise Pascal) "Quand on essaie, c'est difficile. Quand on n'essaie pas, c'est impossible" (Guess Who ?) "I am never wrong. Once I thought I was, and that was a mistake."