A good fanfic should have well - developed characters. It should stay true to the personalities of Bea and Allie from the original source. For example, Bea's tough exterior but with a soft heart for those she cares about, and Allie's charm and her ability to get into trouble.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfics from various fandoms. Just type in 'Bea Smith and Allie Novak' in the search bar, and you'll get a list of relevant stories.
I don't know exactly who Bea Munoz is in this story as I haven't read it. But she is likely the central character around which the ghost story revolves.
To some extent. While it's not a direct retelling of a specific true story, it incorporates elements and themes drawn from various real prison scenarios.
Partly. Wentworth incorporates elements from real-life situations and events, but it's not a direct retelling. The creators have woven a fictional narrative around real themes and concepts.