It is very revealing what the celebrity judges say after this basically unremarkable performance. The first performance a few weeks ago was remarkable (for various reasons--surprise, disconnect between image and voice, the "freshness" of it all), but now that she is a known quantity, listeners have expectations. The panel here has expectations too: they want to "make" a "star" so that they and the program they represent can take the credit.
Had this been her initial performance, the judges might have rolled their eyes at the first out-of-tune notes, but since they have something at stake, they used words in the comments like "you nailed it." Oy.
That's show biz, I guess.