>> She said that she is afraid of the world where a state can decide that they will plannedly un-live whole other nation and nobody is willing to do anything about that.> You may explain her that this is a different face of the same world where a state has been targeted by hatred and terrorism for 80 years, and everybody insisted on them being patient and just live with it.
Being upset at the world and unwilling to engage in diplomacy is, thankfully, not a valid justification for ethnic cleansing and genocide.
> What's happening is sad, but it is not sadder than what preceded it.
The ongoing ethnic cleansing and genocide of Palestinians is definitely sadder than what preceded it.