In fanfiction, their relationship might develop as Santana uses her vampire abilities to save Rachel from danger on multiple occasions. Each time, Rachel becomes more and more intrigued by Santana and begins to see her in a new light. As they spend more time together, they start to fall in love despite the challenges that Santana's vampire identity presents, such as having to hide from the public and deal with other vampires who might not approve of their relationship.
A really interesting plot could be that Santana was a vampire all along but hid it from Rachel. Then, when Rachel discovers the truth, she has to decide whether she can still love Santana. There could be a lot of internal conflict within Rachel as she grapples with her feelings for Santana and her fear of the vampire world. Also, the vampire lore in the fanfiction could bring in elements like Santana having to drink blood in a way that doesn't terrify Rachel completely.
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.