It wasnt anything to do with her lipsyncing or not!!! Her mic was just not turned on! For anyone that has never worked as an audio technician before, i will let you know that if an artist is lipsyncing you mix the vocal track with the music track and no audio technician would ever have them mixed separately...to avoid this very problem! Secondly she was wearing in-ears which are designed so the artist can hear their vocal to make sure theyre in tune.... if she was lip syncing she wouldnt use them it would be a waste of time!