I know it is not pleasant for her. I can't see it is life threat

but I can't see it is life threatening here.

Plus, it will be a fight anyway, why just resign? Chinese should stand for ourselves, but with good strategy and tactic to win a fight, not emotional protest...

If she does plan well and the HR "Cooperates" well, there is a pretty good chance she will get a good amount of money...why just quit?

Damage is done. It is pay back time now... haha.....