It could potentially mean that in a fanfiction story, the character Hermione is depicted as being in an attacking or aggressive situation. Maybe she's attacking an enemy, or it could be a more complex situation where she's attacking an idea or a system within the context of the fan - created narrative.
I'm not sure specifically about 'hermione attacked' fanfictions being extremely popular. However, there are countless Hermione - centric fanfictions out there. Some might involve her in combat or conflict situations which could be loosely related to this idea. You'd have to search through major fanfiction platforms like Archive of Our Own or FanFiction.net to find out if there are any well - known ones with this specific theme.
There are fanfictions where Hermione is attacked in a political context within the wizarding world. For instance, she might be targeted by those who oppose her Muggle - born rights activism. This can lead to a story of her fighting back against discrimination and bigotry while also dealing with the physical attacks. Some fanfics also explore her being attacked magically in a way that she has to use new and untested spells to defend herself.
One possible reason could be a misunderstanding. Maybe Hermione thought Snape was involved in some dark plot against her friends. In the wizarding world, there are often secrets and deceptions, and if she got some false information, it could lead her to take such drastic action.
In some fanfictions, Hermione could be attacked by a new, unknown magical creature that has been unleashed by an evil force. She might be left for dead because the attacker believes she is already dead or simply doesn't care. It could also be that she is betrayed by someone she trusts, like a fellow Hogwarts student who has turned to the dark side, and they set her up to be attacked.
Harry and Ron are the most obvious choices. They've always been there for Hermione in the original series, so it would make sense for them to be the ones to find her and try to save her life. They would use their combined magical skills and knowledge to fight off any remaining threats and get her to safety.
It could be Death Eaters who see Hermione as a threat to their new plans. Since she's very intelligent and has been involved in many battles against the dark side, they might target her to send a message to the Order of the Phoenix.
One possible plotline could be that Hermione was attacked by a group of dark wizards while on a solo mission. They might have been after some knowledge she possessed. After the attack, she could be found by a mysterious figure who nurses her back to health and together they seek revenge.
By using descriptive language about the attack. If the writer vividly describes the attacker's menacing appearance, like 'The dark - cloaked figure loomed over Hermione, its eyes glowing red as it raised its wand menacingly', it makes the situation seem more dire. Also, showing Hermione's fear and vulnerability, such as her hands shaking as she tries to reach for her wand, adds to the tension.
Dumbledore might come to Snape's aid. Dumbledore always had a somewhat complex relationship with Snape, and he would likely step in to prevent things from getting too out of hand. He could use his powerful magic to stop Hermione and then try to sort out the situation calmly.