i really, really doubt Avex will "punish her harshly" for being SICK and cancelling for her own well being. i think the only reason this is made out to be a big deal by tabloids, is because she was overseas when she cancelled and was sick, so i guess people are assuming she didn't want to come back and was making excuses?
how can a singer properly SING with an inflamed throat? if she were to have not cancelled and made it to the show while being sick, there would be an uproar about how bad she sounded.