Sakura could show great courage in a battle. Maybe she faces a powerful enemy alone while Sasuke is watching. Her determination and fearless attitude in the face of danger might make Sasuke see her in a new light and be impressed. For example, she stands her ground and uses her wits and skills to hold off the enemy until help arrives.
In some fanfictions, Sasuke might be impressed by Sakura's newfound medical skills. She could save a comrade in a difficult situation, and Sasuke, who respects strength and competence, would be impressed by her growth and ability to contribute to the team.
Sakura might use her intelligence to solve a complex problem that even Sasuke couldn't figure out easily. For instance, she deciphers a mysterious code or finds a way to bypass a dangerous trap. This would show Sasuke that she is not only strong physically but also mentally, and he would be impressed.
Sasuke can be possessive of Sakura in fanfiction through his actions. He might constantly keep an eye on her during missions, not just for her safety but also because he doesn't want her attention to stray. He may also be possessive in terms of her emotions, wanting her to focus all her love and care on him alone.
In the hospital setting, Sasuke might initially be his aloof self. But as Sakura takes care of him or they face challenges together, he could start to open up more. For example, if Sakura is overworked, Sasuke might offer a helping hand in small ways, like getting her coffee. This would show his growing affection for her.
Their relationship can be shown as one filled with deep love and care. Sasuke, who has always been a bit aloof, becomes much more tender and attentive towards Sakura during her pregnancy. He might start doing small things like getting her favorite foods or just sitting with her and talking about their future as a family.
Sakura might develop into a more confident and assertive person. After the war, she has proven herself as a strong kunoichi, and with Sasuke by her side, she could grow even more. Sasuke, on the other hand, would develop by learning to trust and love again. He has been through so much, but with Sakura's love and support, he could become a more stable and caring person.
The relationship can also be developed through their interactions with other characters. For instance, if they have a child, how they both interact with the child and how their parenting styles differ and blend. Also, how they interact with their friends like Naruto and Hinata. Maybe they have double dates or group outings. All these interactions can show different aspects of their relationship and how it grows and evolves over time.
The relationship often becomes more strained. Sasuke's punishment can make Sakura feel resentful at first. But over time, it can also lead to her becoming more independent as she tries to prove herself to him.
In some fanfictions, Sakura may be determined to find Sasuke and bring him back. She could set out on her own journey, facing various challenges along the way, and growing both as a person and as a ninja in the process of trying to reunite with him.
Sakura would be over the moon. She would blush deeply and look at Sasuke with so much love in her eyes. She might be at a loss for words for a moment, but then she would find her voice and tell Sasuke that she has been waiting for this moment her whole life. She would also feel a sense of pride that Sasuke has chosen her, after all they have been through. And she would immediately start thinking about how to share the good news with their friends, especially Naruto, who has been like a brother to her and has also been a part of their journey.
Sakura might be initially frustrated. She's used to Sasuke being in control, so seeing him drunk could be a bit of a shock. But then she'd probably feel a sense of protectiveness and try to sober him up.