While I've never seen one of her shows, you brought up an interesting point about stage performances.
It's been more than 5 years since I've seen anything other than primarily instrumental jazz performances. Why? because too many vocal "artists" can't do live, what they do in the studio. And, those that come close to approaching their studio efforts, spend more time on their scripted to the minute routine and it comes across as the umpteenth time they've performed it.
I wish we could go back to the day when performers made than money on stage rather than from record sales ... Back to the day when the record was just a marketing vehicle for the live performance ... Back to the day when the star was the singer, not the producer.