Why Hello Kitty does not have mouth為甚麼沒嘴？

Hello Kitty was a dad that her daughter died so create this cat.......
The dad don't want to tell other people that his daughter kill herself because of love so he didn't let the the cat has a mouth.He did not let the cat tell the truth of his daughter to others.Therefore it don't have a mouth.

Hello Kitty dolls haven't mouth ,maybe is good look!!
but Hello Kitty cartoon have mouth in tv ,dvd...!