I think its because of high expectations and has taken it very seriously rather than enjoying the dance .
She also gained some weight and body looks very rigid(just my views) and the dresses for the last item song and for this jazz one are not really suiting her or the dance.
i felt she was good in her first act,, she looked comfortable as it is her forte but yesterday's performance was let down!!
has she gained weight?? i haven't followed her after kasauti but i guess she is fine!!