She's cartwheeling. Not backflipping. Y'know, one of these:

[img]http://media.giphy.com/media/10DwdmwdLpziIU/giphy.gif[/img]

There's a plain and clear difference.

She's cartwheeling by turning her body to the right, swiveling it down, planting her hands on the floor as she flips the rest of her body up and around. And since Judgement's knee strike is coming in from his left, her right, she is in clear view of that strike leaving the floor as her head goes down and her body goes up.