Sakura in future i mean come on she hinted alot for her genjutsu
First time kakashi put a genjutsu on her when she saw sasuke almost dead her emotion get in the way she didnt think or release it
That's because in part 1 Kakashi tells team 7 that Sakura is the only one with the potential to learn genjutsu. She happens to have better chakra control than Naruto and Sasuke and is smarter by exam standards so it makes sense.
This and then sasuke say it again sakura you are the best genjutsu user in our team and she realese the genjutsu in that place
She release iruka genjutsu easily (it was weak but yet)
She release kabuto a rank genjutsu
Kakashi is surprised from sakura strength and taijutsu then he say it again sakura is already a genjutsu tybe user
Sakura release kakashi genjutsu about sasuke thats mean she become better with her emotion and genjutsu
I am sorry talking about sakura here but look kabuto kakashi iruka and examners all used genjutsu