I'm not sure if it's a best - selling book. There are many factors that determine best - seller status such as marketing, word - of - mouth, and the overall popularity of the genre at the time of its release.
We can probably expect suspense, of course. Since it's a suspense novel, there might be mystery, unexpected twists, and a sense of danger throughout the story.
It's possible that Rachel and Will are characters from a less - known or niche media. They could be part of a small - scale web series or a local theater production that has a dedicated fan base. In the fanfiction, the writer may be expanding on the hinted - at relationship between them from the original source material and taking it in the direction of pregnancy, exploring how that would change their lives, their relationships with other characters, and their own personal growth.
Since I don't know the exact story, Rachel could be anyone. She could be a fictional character created for a novel, a real - life person that the storyteller knows personally, or just a name used in a parable.
Rachel Trapani could be a local figure in a particular town or city. Maybe she is known for her volunteer work and the 'Secret Story' could be about the real impact she has made through her selfless deeds, which are not widely known. It's also possible that she is an artist or a writer and the story is related to her creative process that she has kept private.