Sakura decided learning it from Kakashi wasn't worth the effort.Did Kishi just give up and decided she wasnt worth the effort? Guess he thought making her a watered down clone of Tsunade was sufficient.
He stopped training her in middle of the chunin exam and yet sent her after Sasuke to fight Gara. Same teacher he was. And then he and Kurenai both got their genjutsu and genjutsu resistance abilities walked all over by Itachi soon after that.
Kakashi had told her she was genjutsu type because she had good chakra control. She used the same ability for learning medical jutsu. She is allowed to chose what field she wants to go to, isn't she? What's the point of learning some Kurainai level jutsu at best when Uchihas are running around with their moon eye plans.
Wait... were we discussing manga or your fanfiction?Yet she fell for a dude who is a expert in genjutsu. My question to you is, can she handle it? Can she handle the cheating Sasuke did with Karin in the last genjutsue she was put in?