Well, Sakura's jealousy could lead to some interesting plot twists. For example, she might initially try to sabotage Hinata's relationship with Naruto in a very subtle way. However, as the story progresses, she could realize her own feelings are more about her own insecurities rather than true love for Naruto. This self - realization could then lead to her growth as a character, where she focuses more on her own development as a ninja and a person.
One possible scenario in this fanfic is that Sakura's jealousy causes tension within the group. Naruto, being rather oblivious, might not notice at first. Hinata, on the other hand, being very perceptive, could sense Sakura's feelings. This could create an awkward dynamic. Eventually, Sakura might have a heart - to - heart with either Naruto or Hinata, or both. Through this conversation, she could come to terms with her jealousy and start to build a healthier relationship with them.
In such a fanfic, Sakura might start acting out of character. She could become more distant from Naruto and Hinata. Maybe she'd try to prove herself better than Hinata in front of Naruto, like showing off her ninja skills more often.