But once she rams the bike with the car (the issue is contact, not speed or force), that's a totally different ballgame. The right thing to do, at this point, was to get the police involved. But again, I can't speculate what I would have done. Most likely I would have been in a hurry to catch a train, and wouldn't have had the time to fool around with a police report &c.
I don't understand why this car was in the bike/bus lane in the first place... did I miss something?
+1 Once she tapped you it became a crime rather than an someone being impolite or uncivil. A fraction of a second would have been the difference between a nudge and damage to the bike or injury to you.