Who knows? Maybe it's the fact that she isn't tired because she isn't really travelling, plus she has breaks in between shows. Maybe she just likes that it's a smaller audience, maybe she's already comfortable with the stage and the choreography's. SOMETHING is going on but she appears to be 100% back to her element. I mean, this is hardcore dancing she's doing.
I just wish she'd surprise us and sing Lucky, Perfume and Everytime

Or at least lower that ****ing backing track. I'm tired of people speculating whether she's singing or not because she really isn't.