She isn’t lacking, if you actually pay attention she is literally trying to perform and fix her earpiece problem at the same time. During both songs she is preoccupied with her battery pack. it seems she can’t hear anything through the earpiece and that will cause problems for her when she sings or raps. It’s been happening to her and the rest of the members so many times. It’s actually one of the many things I really dislike about this tour, there were so many malfunctions and technical issues and they are having so much trouble fixing it. A lot of times it just remains for the whole tour.
