Well, Draco could save Hermione from abuse in fanfiction by first recognizing the signs of her abuse. Then, he might secretly provide her with protective spells or magical items. For example, he could give her a charmed amulet that wards off dark magic and physical harm. He also might use his knowledge of the Dark Arts to counter any curses or hexes that the abusers might use against her.
Snape, being a skilled wizard, could use magic to protect Draco. He might cast protective spells around Draco when he's alone or in vulnerable situations. Maybe he uses a spell that alerts him whenever Draco is in danger, so he can rush to his aid immediately.
Well, perhaps Snape uses his position as a teacher to step in. He could have been observing the situation secretly and when Draco was about to do something harmful to Hermione, Snape intervened with a firm command or some magic spell to stop Draco in his tracks.
In fanfiction, the scenario of Draco saving Hermione from Viktor can be quite complex. It might be part of a larger plot where Draco is secretly working against some dark forces that Viktor has unknowingly become involved with. Hermione could be a key target, and Draco, having some inside information, decides to protect her. This could lead to a whole new relationship dynamic between Draco and Hermione, as she now sees him in a different light, and Draco starts to question his own allegiances.
One scenario could be that Draco witnesses Hermione being bullied by some Death Eater - sympathizing students. He steps in and uses his quick wit and knowledge of magic to outsmart them. Another could be in a situation where Hermione is being wrongly accused of a crime and is facing abuse in the form of unjust imprisonment. Draco, having some influence in the Ministry due to his family, intervenes and clears her name.
One possible scenario could be that in this fanfiction, Harry discovers that Hermione is being bullied by some dark - minded students at Hogwarts. He steps in immediately, using his skills and the respect he has among his peers to put an end to it. Maybe he threatens the bullies with exposure to the professors if they don't stop.
He could use his position of authority. Snape might confront the abuser directly. Since he's a teacher, he has the power to intimidate and put a stop to any immediate harm. He could also give Hermione a safe place to stay, like his own quarters (if it's within the rules of the fanfiction world).
Well, perhaps he uses his influence in the wizarding world. Maybe he has some connections or knowledge that allows him to intervene and get Hermione out of the abusive situation. For example, he could use his status among the pure - blood families to put pressure on the abusers.
Well, in some versions, Ron might use his quick wit and knowledge of Hogwarts' secret passages to outmaneuver Draco. He could lead Hermione to safety through a passage that Draco doesn't know about.
Well, in some versions, Minerva might notice Hermione's withdrawn behavior in class. For example, she could see that Hermione is no longer as eager to answer questions or participate as she used to be. This change in her normal enthusiastic self could be a sign that something is wrong at home or in her personal life, leading Minerva to suspect abuse.
Well, it changes Draco in many ways. Firstly, he realizes that there are things more important than loyalty to his family's dark cause. Saving Hermione makes him see the goodness in people like her. It could also make him more determined to change the reputation of his family. He may start to work secretly against the Death Eaters, using his knowledge of their plans from being part of the Malfoy family. His relationship with Hermione could also be a catalyst for his character growth, as she challenges him intellectually and morally, pushing him to become a better person.