A major theme is identity. Since they are different from regular humans and even male super mutants in some ways, female super mutants in fanfiction usually struggle to define who they are. Survival is also a big theme. They have to endure the harsh post - apocalyptic environment, facing threats from other creatures and factions.
Well, there's a fanfiction called 'The Rise of the Female Super Mutant'. It tells the story of a female super mutant who discovers unique abilities within herself and uses them to protect a small group of survivors. Also, 'Among the Super Mutants: A Female's Tale' is quite interesting as it delves into the social structure within the super mutant community from a female perspective.
Piper is a great choice for the story. She's a journalist with a curious nature. She'll often comment on the events in the story, adding some interesting perspectives. And her personal quest also ties in well with the overall narrative of Fallout 4.
Dogmeat. He's the most loyal and always there for you. He doesn't have complex dialogues like some human companions, but his presence is reassuring. He can also help you in combat and find things for you, which is really useful during the main story.
Piper is a great companion for the main story. She's a journalist so she has an inquisitive nature. She often comments on the events of the main story in an interesting way, which adds depth to the overall experience.
Deacon is really good too. He's a bit of a mystery man, and as you progress through the story, you start to uncover more about him. His skills are very useful in the story quests, especially when it comes to stealth and infiltration. He also has a great sense of humor that lightens the mood during the often - dark story of Fallout 4.
Lily Bowen can also be considered a top companion for the story. She's a Nightkin with a unique personality. Her relationship with the Courier can be quite endearing, and her story arcs, especially related to her past and her 'granddaughter', are very engaging and add a lot to the overall narrative.
One of the best companion stories in FNV is probably Boone's. His backstory of being a former NCR sniper and his quest related to his wife's death is really engaging. It adds depth to his character and the overall lore of the game.
A good story - companion should have a deep backstory. For example, Cass has a past filled with alcoholism and betrayal. Her story is slowly revealed through her conversations, which makes her an interesting addition to the story.
Mutant fanfiction is fan - made stories centered around mutants. Fans write these to expand on the ideas of mutants in various ways. For example, they might write about a young mutant coming to terms with their powers in a world that fears them. It's a creative way for fans to interact with the mutant concept and add their own twists. Some might focus on the social implications of being a mutant in a more detailed way than the original works do.