Very nice.
This is a tricky one ... believe it or not, but she actually spins and doesn't load/unload her rear-side well ... may be difficult to see for some, in that the forward momentum of the rear hip forward covers up the spin somewhat. Basically what we have here is a swing that uses the rear leg improperly. In a sense, there is not surrendering to the rear-side ... there is no spine engine ... there is simply tilt and spin.
FFS, I'm not familiar with the "spine engine." Can you, or someone, explain this to me or point me to a thread where it's discussed? I'd like to be able to tell my dd what it is/how it feels, and how to use it in her swing. Thanks.