The male gods would be the most likely opponents. Gods like Zeus, Poseidon, and Apollo might not be happy with Fem Percy and Artemis's ideas of a female - dominated world or their dislike for boys. They would see it as a threat to their power and the existing order of things.
You can try fanfiction platforms like Archive of Our Own (AO3). There are a large number of Percy Jackson fanfictions there. Just use the search function and look for ones related to 'Fem Percy' and maybe even include 'Artemis' in the search terms if you want stories that specifically connect to Artemis's want. It's a great place to start exploring.
Another theme could be mentorship. Artemis, being an ancient goddess, can be depicted as a mentor to fem Percy. She could teach Percy about her powers, the ways of the gods, and how to navigate the world of mythology. This can lead to interesting character development for Percy.
In many fanfictions, Fem Percy Jackson often retains Percy's core traits like bravery and loyalty but with a female perspective. For example, she might show more emotional vulnerability in some situations. Artemis, on the other hand, is usually depicted as a strong and independent goddess. Her relationship with Fem Percy can range from a mentorship - where she guides Fem Percy in the ways of the demigod world - to a more complex friendship. Fanfiction writers may also explore how Artemis' views on males and her vow of maidenhood interact with her connection to Fem Percy.
One possible storyline could be that Artemis sees the potential in Fem Percy as a powerful female figure in the demigod world. Maybe she takes Fem Percy under her wing to train her in unique ways, away from the more traditional male - dominated training in Camp Half - Blood. This could lead to Fem Percy developing new skills and a special bond with Artemis.
Yes, there are likely some out there. You can start by looking on popular fanfiction websites like Archive of Our Own or Fanfiction.net. Just search for 'Fem Percy and Artemis Hate Boys' in the search bar and you'll get a list of relevant stories. However, the quality can vary greatly, so you might have to read through a few to find one that really suits your taste.
One great fem Percy Hunter of Artemis fanfiction is 'The Huntress's Path'. It has an interesting take on how a female Percy would interact with the Hunters of Artemis. The story is full of adventure and really delves into the relationships between the characters.
One common theme is identity. Since Percy is usually male in the original, making her female and a child of Artemis changes her identity completely. She has to figure out who she is in this new role. Another theme is sisterhood. As a part of Artemis's group, she has to form bonds with the other Huntresses. For example, in many fanfics, she has to overcome initial distrust from the others.
One great fem Percy Jackson Hunter of Artemis fanfiction is 'The Huntress's Path'. It really delves into the unique perspective of a female Percy joining the Hunt of Artemis. The story has some amazing action scenes where she uses her skills and newfound powers as a part of the hunt. Another one is 'Among the Hunters', which focuses more on the relationships she forms within the group of hunters. It shows how she adapts to their way of life and the sisterhood that develops.
She might be on a quest to retrieve a lost artifact of Artemis. This could involve traveling to different mythological locations, facing monsters along the way. Her skills as a daughter of Artemis, like her archery and tracking abilities, would be crucial in this journey.