Snickers "This is the moment before he pushes her. I see one foot in front of the other."
I agree. I've watched the video over and over, paused it, slowed it down, and watched it as it is. Just as he reachers her, her legs appear to me to be very close together and one in front of the other, both down on the floor or very near it. As anyone walking normally would have them.
The leg in the air people can see at the edge of her coat isn't her leg lashing out at him, it's his leg up as he runs, but the angle of the video means her coat is just in the way.
If nothing else, if it were her leg at that angle it's a really weird way to lift it to trip someone. Nobody lifts their leg up that high to walk, or has it raised in that position to trip someone. But I really don't think it's her leg that we can see.
Her leg only comes out towards him as she's shoved sideways and is already falling towards the road, and she falls quickly and with some force.
I agree with the people who say he veers towards her before he pushes her as well. She had nowhere to go but onto the road, unless she crossed his path first, and why would she do that if it meant getting in his way just to get out of it?. He had the whole pavement at the other side to run on, but he seems to aim at her.
She, and the bus driver, must have been terrified. And it's not just her that could have been killed. There's a car at the other side of that bus, as the bus swerves to miss her the driver of that car must have thought the bus was going to hit them.
They could also have been killed if it had hit them, or they could also have swerved and hit someone else. He might have had more than one injury or death on his hands had things been just slightly different.