Thanks to all, "anti-gravity chamber" looks like is true in that tiny space xd, already polish a little more the turn animation looks best a bit ("white panties" the gravity don't fail jajaja)

I thought she was inside of some kind of anti-gravity chamber that was being turned on and off, and something was lauching her backwards while she was trying to escape from such place. I think I need to start reading the descriptions before trying to interpret pieces. XD

Well, this is a nice animation, but I agree with DragonMarx!

Seconding DragonMarx about the rotation in the air. 
White panties, huh?

 you should make the kick faster, it looks like she's just slowly rotating through the air :/ otherewise very nice pixel manipulation :)