I'm not exactly a fan, but she didn't handle that poorly at all. Those children were being incredibly annoying and were far too close to her. She asked them to please stop touching her. I think she's talentless like the rest of you do, but she wasn't in the wrong here.
I always think it's the most embarrassing thing ever when people literally beg celebrities to stop for them and take pics or w/e. Like, have some pride.
Also, good for these girls. Maybe they'll look for someone else to idolize now.