This reminds me of the time I was in a cafe on my own at a small table when someone on the next table sitting in a large group, turned round and put her dirty plates on mine whilst I was eating.Its was as if I wasn't there. I gathered them up and gave them back to her and her 6 friends. She didn;t really get the message- sounds a bit like that woman on the train.

Thankfully I don't need to commute at present but I remember the problems too well. I was a witness in court some years ago following a pushing and shoving incident on a train which got out of hand and ended up with ripped clothes and bloody noses.