If the parents are legit bourgeoisie, then for real she needs to practise some humility. I've met enough loudmouth leftists with rich parents that eventually fall into a middle class career before they turn 30, remembering the blunder years of them being leftist.
At the very least, they should be focusing much of their energy on praxis and not struggle sessions. Like someone mentioned here that Greta Thurnberg at least uses her privilege for change.
As a child of working class parents, self centred rich "leftists" piss me off. I've had enough of them constantly try to shame me over bullshit, only for them to deflect the gentlest critique of them being obvious assholes over and over. And because of the benefits of their class (education, good speaking, beauty, leisure), people not paying good attention will default to the rich person's side.
One's position relative to the means of production matters a lot. A LOT, comrade.