I know nothing about motorcycles. But the one of the inspirations for this story was an account of a motorcyclist picking up a phantom hitchhiker. Livia grew from that seed.
At the time I wrote this, I did the majority of my writing on Sundays. Since Livia needed to do research at the downtown library, it was natural that she would stop to admire a motorcycle in a window. I needed a brand name so I pulled one out of the air: Ducati. I knew she liked sporty types so I did a quick image search to solidify my idea and get a brand name. This is the "November 11" chapter.
The next day, I left for lunch as usual, and I saw a motorcycle parked in front of the building. It was a Ducati. Not an exact match, but enough to stop me in my tracks. I took a picture of it, and it was gone by the time I left for the day. The picture is the cover photo for this story. I chalked this up to one of my "Art imitates life" experiences. This wasn't the first, but it was the most notable.
I told a friend of mine about it. She said "Write about me winning the lottery."
Suggested listening for this story is "What's the Matter" by Milo Greene. An alternate suggestion is "Last Kiss," specifically the cover version by Pearl Jam, because it was playing on the radio a lot when I wrote this. But feel free to look up any teen death song, TvTropes has a good list.