She could also be angry. Sakura has a strong sense of justice. The idea that Orochimaru thinks he can just have her for whatever his reasons are would make her furious. She might lash out at him, showing him that she's not some weakling he can manipulate. And she would do everything in her power to protect those she loves from Orochimaru's clutches.
Sakura would probably be horrified. She knows Orochimaru's reputation for being cruel and power - hungry. She would immediately reject any offer from him and get ready to fight if necessary. After all, she has grown into a strong kunoichi and won't be easily intimidated.
Naruto would be extremely angry and would rush to save her without a second thought. He would likely use his new jutsu and all of his strength to break into Orochimaru's lair. Sasuke, on the other hand, would be more calculated. He might gather information first and then make a strategic move. Kakashi would probably try to calm Naruto down and form a proper rescue plan, using his intelligence and experience.
Shikamaru, being the intelligent strategist, would analyze the situation carefully. He would consider all the possible moves Orochimaru could make and try to anticipate his next actions. He might also try to figure out Orochimaru's motives for taking Sakura hostage in the first place.
Sakura could react with fear at first. After all, Orochimaru is a very dangerous and unpredictable character. But then she might gather her courage and try to use her strength to break free. She could use her punches, which are quite powerful, to hit Orochimaru's snake body.
She might be surprised at first. After all, Naruto isn't known for his singing usually. But then she could be touched if she realizes the song is for her and about their relationship, whether it's friendship or something more.
Sakura might initially be terrified. She would probably try to fight back using her combat skills and medical ninjutsu to defend herself. Since she is a strong - willed character, she won't go down without a fight.
She would be heartbroken. Sakura has known Naruto for a long time, and his death would shatter her world. She may become more withdrawn and serious. In the long run, she could use her pain as motivation to become stronger. Maybe she would train harder than ever before to make sure that no one else has to suffer the way Naruto did. She might also start to see Naruto in a different light, realizing all the things she took for granted when he was alive.
She would also be deeply emotional. Sakura has deep feelings for Naruto, even if they were not always fully realized or expressed. His sacrifice would make her confront these feelings head - on. She could be seen crying often, visiting Naruto's memorial frequently, and having long internal monologues about their relationship and what his sacrifice means to her.
Orochimaru is cunning and power - hungry. Sakura is strong - willed and intelligent. Their personalities would clash immediately. Orochimaru might try to manipulate Sakura, using her desires to be stronger or her loyalty to her friends against her. Sakura, though, would not be easily swayed. She would see through his tricks and call him out on his devious behavior. However, she might also be intrigued by his knowledge and power, which could create an internal struggle within her.
Sakura's character would likely be more ruthless. Orochimaru's influence might make her less hesitant to use force or engage in morally gray actions. For instance, she might not be as opposed to using forbidden jutsu as she was in the original series.
The older generation of shinobi like Tsunade would be both proud and a bit worried. Proud because it's a new step for the village but worried about the potential challenges that Sakura and Naruto would face. She might offer her medical expertise to ensure a healthy pregnancy. Shikamaru would probably be the voice of reason among Naruto's friends. He would help them think through all the practical aspects of having a baby, like housing, finances, and how it would affect their ninja duties.