WA Sakura~MKCM~ems sasuke>~itachi She should be highly resistant to genjutsu And can tank the amaterasu while killing him then chop off the part that was on fire and regen it
Wym tank Amaterasu? It’ll just keep burning her as she keeps regenerating, it would be just a sad and slow death. And resisting Genjutsu doesn’t work on the Sharingan, even lady chiyo said that running is the only option when facing the Sharingan alone, and Kakashi added to that saying that even if they had more people Itachi was on a different level
Well, we see that she is able to survive and walk around when heavily poisoned so she would still be able to move as the amaterasu doesn't slow your speed it just hurts. So she could still punch him in the face. And the 100 healing chakra being dropped into her would break the genjutsu as it disrupts her chakra. And if she did fight she wouldn't look him in the eyes as she isn't stupid.
The thing is that Sakura and Tsunade’s fighting style is dependent on their durability (Tsunade more than Sakura) because they know that almost nothing can kill them and they can tank most attacks and heal from it. But Itachi has 3 abilities that counter that Amaterasu, Tsukuyomi and the Totska blade. Regeneration is useless against Amaterasu and the Totska blade, and physical strength and durability is useless against Tsukuyomi as it is a mental anguish and torture and Itachi can just stretch out the time to make it years and decades of torture and not just 72 hours
I'm saying that, totsuka blade is a gg yes, amaterasu while it would burn her she would keep regenig and then fight him still and she is smart so wouldn't look at tsukoyomi. And if she is hit to amaterasu itachi doesn't have kagatsuchi so he cannot spread the flames so she would put them on her arm and then after the battle chop it off and regen it back