Another way Severus could save Hermione is by using his knowledge of the Dark Arts in a positive way. If she was hurt by a Dark spell from Ron (in the context of the fanfic), Severus might be able to counteract the spell's effects. He has extensive experience with Dark Arts spells, so he could figure out what spell Ron used and then use a counter - spell to reverse the damage.
There might be some kind of misunderstanding. For example, Ron could have been misinformed about Hermione's actions. He thought she betrayed him in some way, like sharing Gryffindor's secrets with Slytherins, so he lashes out at her.
Severus might be developed as a more complex and empathetic character. By saving Hermione from Ron, he shows a side of himself that is protective and caring, which is different from his usual cold exterior. This could be a turning point in how the other characters view him.
Well, he could use his magic skills. Maybe he casts a powerful spell on Ron to stop him and then takes Hermione to a safe place, like Hogwarts where there are protective enchantments.
One possible plot could be that Ron is under the influence of a dark spell that makes him act aggressively towards Hermione. Severus, being observant, notices this and steps in to protect Hermione. He uses his potions knowledge to create an antidote for the spell on Ron.
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 fanfiction, anything can happen. Hermione leaving Ron for Severus might be a way for writers to show Severus in a different light. Perhaps they see Severus as someone who has been misunderstood and Hermione, being the intelligent and perceptive character she is, could be the one to recognize his true worth. But it also shakes up the core relationships we knew from the original series, which can make some fans uncomfortable.
One popular trope is the 'enemies to lovers' where Severus initially dislikes Hermione but gradually falls for her. Another is the 'teacher - student relationship' dynamic which adds an element of forbidden love. And the 'redemption arc' for Severus through his relationship with Hermione is also common.
Often, the daughter acts as a bridge between them. She has qualities from both Hermione and Severus. If she inherits Hermione's kindness and Severus' determination, she can inspire them to be better versions of themselves. In the fanfiction world, this can lead to them having a more harmonious relationship. They might start to see the good in each other that they hadn't noticed before because they were too focused on their own differences. The daughter's existence makes them re - evaluate their relationship and work towards a more loving and supportive partnership.
Well, it could be that Lucius uses his powerful influence in the wizarding world. Maybe he intimidates Ron with threats related to his family's status or he uses some dark magic to create a distraction and whisk Hermione away.
Well, it could be that Snape has been secretly observing Ron's erratic behavior towards Hermione. When the situation gets out of hand, he intervenes. He might use his position as a teacher to discipline Ron and in the process, saves Hermione. Snape is a complex character with a lot of power and knowledge, so he could use various means like his occlumency skills to sense the danger Hermione is in and act accordingly.