A combination of empathy at "this poor pathetic lady who thinks she can be another Elaine Page"
Shame at our own cynicism.
Realization of how many brilliant performers never get a chance because they "don't look right."
Realization of the years this woman has toiled in anonymity with a dream that should have been manifested years and years ago, and how it has been our loss.
The empathetic joy of sharing this woman's moment of glory in front of the world.
Sensing the unfairness of those who scoffed at her and the feeling of "Well, she certainly showed them!"
...and then realizing "they" are "us."
The understanding of the bravery it took this woman to get to this spot.
Realization that our own dreams that we have given up might have yet come to fruition had we only persisted.
Feeling proud for her.