That performance was great
However I wanted her to perform Diamonds in the key she did at the monster tour. I feel like she's singing to low sometimes. But she's probably being told that her voice sounds stronger when she sings in a lower key.
Stay was the best out of the two you can tell that she really feels that when she performs it live.
However she's performed those songs much better before.
I wanted her to do We Found Love and Umbrella acoustic aswell
Her stage presence and vocals, amazing! 
