I don't think it can be put into words. It's more of the type of dance you have to watch people do and how they move to learn.
I suggest you watch instructional videos and learn from there. There are many videos on YouTube that show you how. :-)
If she does that dance in one of her music clips maybe try learning it from there. Sorry wasn't much help. :)
i cant really find a good one on youtube :/
oh, its okay :)