A Sunflower in the Dark: Marauders Era Sirius Black

Raena Mcdougall is not entirely sure why she was sorted into Hufflepuff House. Both of her parents were in Gryffindor, and while she has no hard feelings about her Sorting, she wanted so badly to be in Ravenclaw.
Growing up, she practically lived at her best friend Asteria Lovegood's house. They both studied and read up on mythology and theory, aspiring to be brilliant like Asteria's mother.
But, during the Sorting, Asteria achieved her goal immediately before Raena failed.
As her aspirations change and two years go by, she finds herself becoming friends with a couple of quiet boys in her Herbology lesson, Peter and Remus. However, their mates, Sirius and James, won't leave them alone. After being annoyed by their nonsense for a while, Raena is surprised to find a different side to the strange group of people.
Particularly Sirius Black.