Sorry I didn't see this at the time! Brilliant. Thanks for being so #forensic.
Just attempted my own version, but my 'artwork' is about the same level as Jack's 'cooking' so good luck figuring it out. Might need to explain a few things.
So this plots the trajectory of Jack, assuming the train platform was sloping downwards towards the train. The pink thing is not an unruly labia, it's a Mediterranean arse. The orange thing is Jack's hair, obviously. The Mediterranean arse is more or less static, but the hair is nomadic. I've given the train some sinister Jack eyes but these did not feature in her original statement. Trapped Jack is not injured; she simply has multiple body parts to account for the inconsistencies in her original story. These include an extra head and some additional thighs.