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.
In such fanfictions, the relationship between Naruto and Kyuubi can be developed in various ways. For example, the Kyuubi could start teaching Naruto about his heritage in a more motherly way, like sharing stories of the Uzumaki clan. Naruto, on the other hand, could show his loyalty and love towards the Kyuubi as he would to a mother. This could also impact his relationships with other characters. His friends might be initially confused but later come to understand and support this new relationship of Naruto's.
Well, Kyuubi might influence Naruto's growth by providing him with a sense of power from within. Since Kyuubi is like a mother figure, she could be a source of emotional support too. Naruto may draw strength from their connection, both in tough battles and in dealing with his own insecurities.
The 'Naruto Kyuubi Mother' concept can change Naruto's story by adding a new source of guidance. Instead of just relying on Jiraiya or Kakashi, he now has this mysterious connection to the Kyuubi's mother which can lead him in different directions.
One interesting 'Naruto Kyuubi Mother' fanfiction could be where the Kyuubi's mother has a backstory of being a powerful spirit from an ancient era. In the fanfic, she might be trying to protect Naruto from afar, using her hidden powers to influence his growth and development.
In this fanfiction, one unique plot point could be the way the Kyuubi's power is intertwined with Naruto's family heritage. Since the Kyuubi is now considered his mother, it might change how Naruto discovers and masters his own powers. For example, instead of seeing the Kyuubi as a force to be tamed, he could see it as an inheritance to be understood.
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.
Naruto's character development would be drastically different. He might be more in tune with his 'fox - like' nature from the start. Instead of fearing the Kyuubi's power, he could embrace it as part of his identity.
Yes, in some fanfictions, Naruto is often depicted as the Kyuubi or having a very close connection to it. This can lead to really interesting and unique storylines that deviate from the original plot.
In many Naruto fanfictions, Naruto might have developed some new and unique abilities that the Kyuubi has no defense against. This could make the Kyuubi, which is used to being a dominant and feared force, feel vulnerable. For example, if Naruto has the power to nullify the Kyuubi's chakra or to manipulate it in a way that goes against the Kyuubi's will, it would be a cause for fear.