There could be. Fanfiction is a vast world full of unique ideas. A Fem Kyuubi as Naruto's mother would be an unconventional but fascinating concept. It might change the entire dynamic of Naruto's story, from his relationship with the villagers (as they might be even more fearful or respectful considering his mother) to his own self - discovery journey.
It would likely have a huge impact on Naruto's power development. With a fem Kyuubi as his mother, Naruto might have an even closer connection to the Kyuubi's chakra from the start. He could potentially access more of its power more easily. For example, he might not have to struggle as much to control the Kyuubi's chakra as he did in the original story.
In some fanfictions, Naruto's mother, Kushina, has a special connection with the Kyuubi. For example, some stories might explore how Kushina's chakra influenced the Kyuubi's behavior. Since she was the Jinchuriki before Naruto, her relationship with the Kyuubi could be a rich source of plot development in fanfiction.
One implication could be that Naruto has a stronger connection to the Kyuubi's power from the start. Since it's his mother, he might be more in tune with the fox's chakra and abilities. For example, he could learn to control it more easily without having to go through as much struggle as in the original story.
There could be a fanfiction where Fem Naruto discovers a hidden side of Fem Kyuubi. Maybe Fem Kyuubi has some memories or powers that were locked away and Fem Naruto helps her unlock them. This could set off a chain of events that not only changes the relationship between them but also has a major impact on the entire ninja world as they face new threats and opportunities together.
Well, one possibility is that it could explore how the fem Kyuubi's new role as Naruto's mother would change Naruto's upbringing. Maybe she would use her powerful chakra to protect Naruto in ways that Kushina couldn't. For example, she could teach Naruto some unique jutsu that are related to her own nature as the Kyuubi. Also, it could show how the relationship between Naruto and the other villagers would be different. Since the Kyuubi is now in a maternal role, perhaps the villagers would be more accepting of Naruto earlier on.
I really liked 'Fem Kyuubi's Bond with Naruto'. In this fanfic, the fem Kyuubi forms a deep emotional bond with Naruto. The author does a great job of showing how they support each other through various challenges. It has some really cool fight scenes where the fem Kyuubi's unique abilities are shown, which makes for an exciting read.
Yes, there are likely fanfictions out there with this concept. The Naruto fandom is quite large and diverse, so many creative and unique ideas get explored in fan - made stories. However, the quality and content can vary greatly from one to another.
One great fem Naruto x fem Kyuubi fanfiction could be one that focuses on their unique bond. It might explore how they interact in a world where Naruto is female and the Kyuubi also takes a female form. For example, it could show them teaming up against common enemies and how their combined powers are different from the original story.
Well, in some fanfictions, fem Naruto's mother could be a powerful figure, and her interaction with Kurenai could be quite complex. Kurenai, being a skilled kunoichi, might respect fem Naruto's mother for her own abilities. They could exchange knowledge about jutsus or strategies. It could also be that they have a mentor - mentee kind of relationship, with one teaching the other some unique ninja techniques.