She used to be a silly girl competing with Sakura, following boys around and stuff. Loud, noisy and irritating. But in the war arc I feel like she's gotten the biggest character developement out of all characters (besides Kabuto). She matured, faced her fears when and emotions when fighting Asuma. Went through an emotional crisis when her father got killed, most likely became the strongest Yamanaka alive, saved the Alliance a few times and connected minds of hundreds of thousands shinobi simultanoeusly. And despite all this, she still remained an innocent girl with dreams and her pure love for Sasuke.