I take it that you are a really polite person? Well, I am not.
The audience was simply rude. Yes, they applauded a bit at the beginning and a bit at the end. But there was basically no applause during the performance, not after her jumps, not during her spiral, not during the steps... And she got an encore because every gold-medal winner gets one.
She was probably standing at the boards while Abbott skated - and witnessed how Abbott got loads of applause for his jumps, for his steps, for his spins... - and perhaps she noticed that they didn't do that for her. It's just unsportsmanlike to behave that way. I am starting to be really glad that Mao won this, just serves them right. Of course it's not Kim's fault and she deserved to win as much as Mao if she had the better skate.