She always screams during the song, but this wasn't an "excited, everyone get up and dance" scream. Even if you don't catch at first after she screams she looks like she's in pain the rest of the song. It's so sad :(
it was heartbreaking, ive seen the video a couple times and it makes me want to cry so bad. she makes so much for us, she even hid her injury to keep making shows and not let us down!!! if that doesn't speak true love to her fans and her job i don't know what else would do... but it makes me sad anyway :( she hid it to 'make us happy' (in some point not that literal) and she hurt herself more :( get better mommy we all want you to be happy and healthy ♥