He might be shocked at first. Naruto has always had a complex relationship with the Kyuubi, so finding out his mother is somehow related to it would turn his world upside down. He would probably have a million questions running through his head and would need time to process such a huge revelation.
Well, initially, Naruto would likely be stunned. Given his journey of coming to terms with the Kyuubi inside him, this new information would be like a bombshell. He could feel a sense of confusion, like why his mother had this connection. But then, he might also start to see things in a new light, perhaps realizing that there were deeper reasons behind his own abilities and his connection to the Kyuubi all along. It could also make him feel a new sense of pride or determination, as if there was more to his heritage than he ever knew.
Naruto would be in complete disbelief. His whole life he has known the Kyuubi as a powerful and often feared entity within him. Discovering that his mother has a connection to it would be a mind - boggling concept. He may start to question everything he thought he knew about his family. At the same time, it could give him a new perspective on his own strength. Maybe he would start to think that his mother's connection to the Kyuubi was part of a grand plan that somehow led to him being the person he is. He might also feel a sense of responsibility to understand more about his mother's connection and how it affects his role in the ninja world.
It could mean that Naruto has a more powerful and mysterious heritage. His abilities might be even more special than previously thought.
Naruto might initially be shocked and angry. He has always considered the Kyuubi as an enemy within him, and now being kidnapped by it is the worst - case scenario for him. He could try to fight back immediately, using whatever little chakra he can muster without relying on the Kyuubi's power.
He might be initially confused. Naruto is used to dealing with all kinds of opponents and situations, but a yandere Kyuubi would be a new and strange thing for him. He could try to reason with her at first.
Sasuke would be devastated. He and Naruto had a complex relationship, and despite their differences, they were like brothers. His reaction might be to isolate himself at first, blaming himself for not being there to protect Naruto. Sakura would be heartbroken. She had deep feelings for Naruto, and his death would be a huge blow. She might become more determined to protect the village in his memory. Kakashi would feel like he failed as a teacher. He always saw Naruto's potential and to lose him would be a great loss for him.
He might also try to reason with her. Naruto has a big heart and he would likely want to understand her feelings. He could say things like 'We're friends, we don't need to be this way.' He'd try to get her to see that her possessiveness is not healthy for either of them.
Sakura would be devastated. She has always had deep feelings for Naruto, whether it was friendship or something more. She would probably throw herself into her medical work even more, trying to find a way to bring him back, even if it was impossible. Shikamaru, being one of Naruto's friends, would be solemn. He might use his intelligence to figure out what really happened to Naruto, and he would be the one to come up with a plan to deal with the aftermath.
Naruto might feel a sense of responsibility. He would see it as his duty to help Boruto understand and control the Jougan. So, he could start to create special training regimens for Boruto. These regimens would be designed not only to strengthen Boruto's physical and ninja skills but also to help him master the unique powers that come with the Jougan. He would also teach Boruto about the importance of using such power for good and protecting the Hidden Leaf.
The villagers' reaction would be mixed. Some would be in awe of Fem Kyuubi's power and her act of saving Naruto. They would see her as a hero and start to change their views on the Kyuubi in general. However, there would also be those who are still fearful. They might think that Fem Kyuubi has some ulterior motives and be suspicious of her. Naruto's friends from his ninja team, like Shikamaru and Choji, would probably be more accepting. They would welcome Fem Kyuubi as long as she proves to be on Naruto's side and doesn't cause any trouble for the village.
Tsunade could be impressed by the power of the Kyuubi suit. Given her own strength, she would appreciate the additional boost it gives Naruto. She might even see it as a valuable asset in protecting the village and start to develop strategies around how Naruto can best use the suit in combat situations.
The older generation, like Tsunade, would be horrified. They've seen Konoha through many hardships and would not want to see it destroyed. They would likely mobilize all available forces to stop Naruto and the Kyuubi. Meanwhile, Naruto's friends like Shikamaru and Choji would be in shock. They've always known Naruto as a kind - hearted and loyal friend, and this sudden turn would be very difficult for them to accept. They might initially be in denial and then try to find a way to stop Naruto without harming him.