Another possibility is that it's part of a spell -casting or magical process. In the world of fanfiction, there could be some unique magic that requires this action. Maybe it's a way to transfer energy or knowledge to Hermione. He holds her head in place to ensure a proper connection for the magic to work effectively.
It might also be a moment of great emotion. Perhaps Hermione has fainted or is in shock, and he holds her head in place as a tender, caring gesture. It could symbolize his deep concern and love for her, like when someone you care about is unwell and you try to comfort them in the most basic, physical way.
One scenario could be after a battle. Hermione is injured and he holds her head in place to keep her stable until help arrives. He might be worried that any movement could worsen her condition.
Well, it could symbolize a new beginning. Just like in real life, a new haircut can mark a change in a person. In fanfiction, Hermione getting a haircut might show that she's ready to break free from her old self, perhaps be more daring.
In some cultures, this could be a gesture of respect. The son might be performing a traditional act of showing his reverence for his mother. For instance, during a special ceremony or in a situation where family values and respect for elders are highly emphasized.
Perhaps it represents a sense of victory. They could be in a situation where they have outsmarted someone together, like a sly Slytherin or a nosy Gryffindor. Their grin would then be a way of celebrating their success without having to say a word.
It could be that she wants to explore different interpretations of the story's end. Fanfictions often offer new perspectives.
In this fanfiction setting, Snape might be at Grimmauld Place on some secret mission. Hermione, being the inquisitive witch she is, could stumble upon him. There could be a tense moment at first, but then they realize they need to cooperate. Snape could teach Hermione some advanced magic that she wouldn't learn at Hogwarts, and in return, Hermione could offer her unique perspective on the wizarding world. Their relationship could develop into an unlikely alliance, which would be really exciting to read about.
She could discover a hidden room. Maybe there are some long - forgotten artifacts or spells in there. This discovery could lead to a whole new adventure for her. Or she might accidentally trigger a magical protection spell that causes some strange things to happen around her. For example, objects might start floating or strange noises could be heard.
Well, it could be about Hermione getting caught in the rain while at Grimmauld Place and then having to deal with being soaked. Maybe she has to quickly find a way to dry off and in the process, there are some interesting interactions with the other characters who are also at Grimmauld Place.
In some fanfictions, the snake necklace could be a symbol of Draco's Slytherin heritage. It might be used to show his connection to the darker, more mysterious side of the wizarding world. Hermione's interaction with it could represent her delving into that part of Draco's world, perhaps as a way to understand him better or to bridge the gap between Gryffindor and Slytherin. For example, if Draco gives Hermione the snake necklace in a fanfic, it could be a sign of his trust or a new level of their relationship.
In this fanfiction, perhaps Hermione finds love in a place like a hidden magical library. It could be that she meets a mysterious wizard there who shares her love for ancient spells and they gradually fall in love as they explore the secrets of the library together.