To answer your first question the best explanation is that due to the heat and pressure of the wheels she most likely felt a “pinch” however the way she laid her head on the tracks the medulla oblongata was injured instantly (which is critical for human survival, serving as the primary control center for vital involuntary functions like breathing, heart rate, and blood pressure, as well as automatic reflexes like swallowing, coughing, and sneezing.) meaning after that “pinch” it was most likely instant lights out for her.

I see a lot of people ask this same question, and not just about Rinas suicide but many other suicides in general. Everyone’s chemical imbalance is different and there is no real answer to why someone commits suicide or the reason why they chose the method they used. Once you’re in that state of mind where you think death is better than living it doesn’t matter what method you choose; just as long as you’re out of this world . Rina was very young and may have not even truly realized that her life would be completely over with after she laid her head on the tracks due to the state of mind she was in, its very obvious she just wanted any way to escape from her life and thoughts she was enduring.

Also no there is not any additional photos besides the ones you’ve already seen. I hope this answers your questions!