Well, 'the last female saiyan fanfiction' could center around the unique powers and abilities that this last female Saiyan has. Maybe she has powers that are different from the male Saiyans due to her being the last of her kind. It could also explore how she copes with the legacy of the Saiyan race and whether she tries to revive it or not. For example, she might search for other Saiyan survivors across the universe or try to unlock hidden Saiyan secrets.
The 'the last female saiyan fanfiction' could be a story full of action and drama. It might start with the discovery of this last female Saiyan. Her story could be intertwined with the existing Dragon Ball storylines. She could be a key figure in a new threat or a new hope for the universe. She may face challenges like being hunted by villains who want to use her Saiyan powers for evil. Or she could be on a quest to find a place where she truly belongs, as she is the last of her kind, and this journey could take her to different planets and introduce her to various alien races.
I'm not sure specifically as it could vary greatly. It might be about the last remaining female Saiyan in the Dragon Ball universe. It could involve her adventures, her struggle to survive in a world where Saiyans are nearly extinct, or her relationships with other characters like Goku or Vegeta.