The girl was not leaning against a moving train. The train was not moving until the guard blew the whistle for the driver to move it. It was his job to make sure the train was clear of people. If you see the pictures the platform was not busy. She got off the train and then, realizing the wrong stop, turned and leant against the window while the train was stationary. The guard then blew the whistle for it to move. It doesnt matter if she was drunk-the guard is there to stop the train moving until it is clear of people whether they are drunk, blind, deaf, not concentrating, pushed forward or crowded by others, disorientated, elderly, young- that's his job. Why did he do this? the jury found him guilty and the judge gave him a serious sentence so i assume they suspect he did see her and he was trying to 'give her a fright'.