What an awful experience for you. I would give up my child's seat to ANY adult but would be outraged if I was approached in the way you were. How extremely rude of that lady and to be honest I don't think I would have been able to contain myself until the train stopped, you did well. I would be ringing V-Line and putting in a formal complaint, not sure whether they have cameras, I hope they do, she should be charged with assault.

Regards,
Dianne