She was amazing, but I didn't like the performance overall. The staging and production were horrible. All these random people around her, not even doing the same steps as one another for the most part, was too much of a chaos. The Voice viewers seem to enjoy the simpler performances, so what she did on SNL would have been fine.
She was incredible though. This is the best, most energized and most charismatic I've seen her on stage since like 2008.