Cup day I was riding the train back home after work and that Nyoongar (she said she was?) boarded 1/2 way in she was on something (ice? jungle juice? VB

) and was very aggressive.
She started to call a guy a white c^nt, and told him she would kick him bad before the end of the ride, the poor guy left the train at the following station........ she then started to abuse a young Maori chick calling her a fat bitch, and making comments that I would not repeat here

.
She had another go at an Asian looking guy asking him what he was and calling him a Chinese c^nt.The carriage was getting close to empty and I had to go to the last station, she was getting more aggressive by the minute.
Was thinking: what would I do if she attacked me? I am not a small bloke and I can defend myself even I would prefer to defuse the "tension "if could.
What is the rule of engagement? She was very tall and well built in a muscular way. She must have been full of ice. So if she had thrown the first punch could a bloke retaliate........ she was (kind of) a woman.
What wold you do if in that situation and it escalated to a punching feast?
She kept going on and ignored me till the end of the ride, at the terminus the transport police took care of her.