She is a kid...she probably has a lot of hopes on this show as her opportunities as a visually impaired child will be a bit limited in the future as people are not that supportive and understanding.
Of course she will cry -- grown ups cry -- dont forget her age and stop comparing her to everyone else.
I did find her singing a bit shaky compared to others, so in that respect the voting was correct. There will be only one winner of the show and I am sure many can agree it will not be her.
I think those people making fun of a kid and pointing out stupid things should really be ashamed of themselves. Go take a look in the mirror before you go picking on others !!