Turning around Rosalina offstage?

[Sandwico]

Whenever I'm edge guarding with Rosalina and facing away from the sage, I sometimes mess up the recovery by not able to turn around in mid-air and flying off-screen. How can I turn around?
Edit: Know about b-reverse now!
Here's an example I found (1st edgeguard)
gfycat.com/DentalGreedyArgusfish

 

[ParanoidDrone]

That was a b-reverse, I'm not sure where you got the idea it wasn't. Press backwards on the control stick right after using a special move. The gfycat showed Launch Star but it'll work with any special move.

The tricky part is that Launch Star can be angled, so you need to be fairly quick with your control stick inputs if you want to do anything really complex like a b-reversed vertical launch.

 

[Sandwico]

I couldnt even tell that it was b-reverse it happened so quick. Thanks for the tips!

 

[Ingoro]

Practice her up-b timing, there's an angle, slightly behind her when you're pressing up b which makes her go straight up and covers a great distance.