Individual,
I doubt it because White women would be more likely to think things through and do a quick risk vs reward analysis than low IQ African women.
Africans like all dumb people the world over have ridiculously high opinions of themselves and their capabilities, they think behaviour like this is a pathway to some gain and that causing a ruckus is going to result in prestige and admiration from others....which it does on social media but social media isn't the real world.
That aside this girl didn't grow up among Whites and her comments are based on ignorance and result from a low intellectual capacity and being easily led by smarter, more devious people on Facebook who want to use her to push their own agendas.
The best way for the restaurant to deal with this attempted scam is to ignore Ms Teklemariam because she's not very bright and has been manipulated by Anti Racists, but to be fair the authorities should also pardon or acquit all those addled middle aged White women who yell at Asians on public transport.
They know not what they do.

<<“I don’t care if you think I’m being a racist cause (sic) I’ll openly admit it, I hate whites with a passion.”>>

Now just imagine if an individual from a group -- other-than a multiculturally recognized minority -- had said: "I hate racial or religious group X WITH A PASSION"

Holy Moses!

Yoooo-hoooooooooooo! all you anti-racist campaigners where are you?

Christine Milne?
The ABC?
SBS?
Paul 1405?

Annnnnnny takers at all?

SPQR,
I bet if you went on Facebook and looked at the profiles of her supporters you'd find that 99% of them are White, under 40 and support other pseudo left causes.

Racial discrimination laws like 18c serve only one purpose, they are specifically intended to protect the official history of events surrounding five German labour camps in Poland which operated between 1941 and 1944, that's the only reason they exist at all.
The justification is always given in the form of "words lead to actions" but those camps operated under such strict secrecy that there's no proof that even the National Socialist leadership knew what was going on behind the wire. Even if the official, protected history of those camps could be proven (it can't at present) then reason fails, there were no words to excuse or promote the actions, the public were told that criminals, asocials and troublesome ethnic minorities were being sent east into exile or to work off their debt to society, not to be killed or maltreated.
The reasons for the protected status of the history of those five work camps is the subject of considerable controversy and can actually lead to prosecution or persecution by vigilantes so we need not go into it here.
You'll notice that these "Train ranters" are only ever charged with offensive behaviour or disturbing the peace type offences? To use 18c or the other proposed "race laws" would open a can of worms, or to put it another way, let the Genie out of the bottle, do we really want to see drunks, Aborigines, the mentally ill or people of low IQ charged with "hate speech" and locked up for three years like Brendan O'Connell?
To most people is a smack on the wrist is fair enough, people who breach the peace in that way should face a small fine or community service and suffer the embarrassment of being arrested and facing court, nothing more. Anyone who further harasses them or makes false allegation of "Racism" should face the same charge of offensive behaviour.

Jay,

<<do we really want to see drunks, Aborigines, the mentally ill or people of low IQ charged with "hate speech" >>

Not sure that would ever happen. Any such laws seem to be very, very selectively applied. There was at least one case --which I cited in an earlier thread-- where an Aboriginal's abuse of a white, far worse than the Adams Goodes incident, was excused by a magistrate as unactionable because it was street language.

Similarly I'd suggest if SBS's "Legally Brown" reversed some of its jokes/skits and directed them at non-anglos all hell would break loose--remember "Hey Hey It's Saturday's" infringement!

And the real cost is that such train incidents will be cherry picked and fed to impressionable undergrads as proof that OZ is bad bad bad--I sat through one such semester! Or,as foundation for one of SBS's monthly doco-sermons. This month SBS is running with "Once Upon a Time in Punchbowl" which makes out Cronulla was all due to WASP racism and intolerance (no doubt, Foxy will be linking us to it on another thread one day soon!). And it will also be used as proof of the need of another layer of bureaucratic thought police and conditioning.

SPQR,
Yes, it all goes to prove that 18c and the other provisions in that act are unworkable in the real world, they're an adequate tool for protecting a historical narrative but useless in any other context.
What people seem not to appreciate is that the coalition's proposed otion upon repeal of 18c would make such "Street Language" a criminal offence, so things actually get worse for free speech, not better.
My previous post on the German labour camps is probably actionable under 18c, the fact that such statements are politically incorrect is the sole reason why I take that position on WW2 but under the Brandis model it would be illegal, it's a big difference.

I hope this racist sheilah is getting a one-way ticket back to Somalia where she won't need to worry about whites so much because I'd hate her to have to go on social security because no-one will want to employ her now. I suppose the Greens might offer her a position as a consultant.