It could be that Itachi is being controlled by some dark force or an enemy. He doesn't really want to harm Sakura but has no choice. The fanfic might then focus on Sakura trying to figure out how to break the control on Itachi while also trying to escape from the situation. She could use her medical ninjutsu skills to her advantage in some way.
Yes, there are likely some 'Itachi Sakura married' fanfictions out there. Fanfiction websites have a wide variety of works, and this pairing, while not as common as some others in the Naruto fandom, may have been explored by some authors who like to create unique relationships in their stories.
No. Abuse in any form, even in fanfiction, is not appropriate. The Naruto series is mainly about positive values like friendship, hard work, and loyalty. Fanfiction that involves abuse between characters like Sakura and Itachi goes against these values.
I'm not sure specifically as it could be a very specific fan - made story. It might involve the character Pain from a particular series kidnapping the character Sakura. Maybe it's a story exploring dark themes, power dynamics, or the rescue of Sakura within the context of the fanfiction world.
Sakura would likely be initially terrified but quickly regain her composure. She is a trained ninja after all. She might start by assessing her situation, looking for any weaknesses in Team Hebi's defenses or any possible escape routes. Sakura would also try to talk her way out of the situation, using her intelligence to reason with Team Hebi. If that doesn't work, she would be ready to fight back using her taijutsu skills and any medical ninjutsu that could be used offensively, like her chakra - enhanced strength punches.
Sasuke might also be involved in the rescue. Despite their complicated relationship, he still has some feelings for Sakura. And he wouldn't want to see her in the hands of someone like Deidara. Also, Kakashi, as their former sensei, would likely lead a rescue mission. He has the skills and experience to deal with Deidara's explosive attacks and find a way to save Sakura.
In this fanfiction, Itachi might help Sakura become stronger by training her in various ninja skills. He could teach her advanced genjutsu techniques. For example, he might start with the basics of detecting and breaking genjutsu, and then gradually move on to creating complex illusions herself. This would enhance Sakura's ability to defend against and use genjutsu in battles.
Definitely. One way to find good sakura and itachi love fanfiction is to ask in relevant fan communities. Fellow fans can recommend some great stories they've read. Also, when you start reading, pay attention to how the author builds their relationship. Some might base it on mutual understanding and respect, while others could take a more angsty route with lots of obstacles in their path to love.
One possible scenario could be that in the fanfiction, Sakura is jealous of someone who has a special connection with Itachi. Maybe Itachi has a mission partner who he seems to trust a great deal, and Sakura, having feelings for Itachi, feels left out and jealous. She might start to act out in small ways, like being more curt with Itachi or trying extra hard to prove herself on missions to get his attention back.