First, let me say I am NO expert. I don't even personally drive. But I do have lots of friends that are very serious about it and I also watch the driving classes at the shows.
My novice opinion is her head is too high for true WCP. Also, as someone else said, if her knee could be flatter - more of a straight-legged movement, I think that would help also. Otherwise, work on raising her head and increasing her knee break and show her CP. But as she is in that video, she's really a "tweener" as in in between the two classes.
Good luck with her!!