She could face isolation within the Hogwarts community. The students might gossip about her newfound relationship with Lucius. Hermione may also become more involved in the darker aspects of the wizarding world if Lucius leads her that way. Her academic focus could shift as she gets caught up in the drama of this new relationship. Moreover, she may end up regretting leaving Draco if she later realizes that Lucius was just using her, and this could lead to a lot of emotional turmoil for her.
Well, in some fanfictions, Lucius might use his charm and power. He could be depicted as very persuasive and use his status in the wizarding world to make Hermione see him in a different light. Maybe he offers her opportunities for knowledge or power that she doesn't get with Draco.
One consequence could be that Hermione becomes isolated from her original friends. Since she only trusts Lucius and Draco, her Gryffindor friends might not understand her actions and distance themselves from her.
In this scenario, it could also lead to a major shift in the relationships within the fanfiction. Hermione might feel betrayed if Draco doesn't stand up to his father. And Draco could be forced to make a difficult choice between his family's expectations and his feelings for Hermione. Lucius's interference could also bring in other elements of the wizarding world, like the Ministry or other pure - blood families getting involved depending on how the situation unfolds.
On the other hand, it could also lead to a change in their relationship. Draco might start to respect Hermione's boldness and intelligence. He could realize that his own behavior has been rather childish, and this could be a turning point in the fanfiction where they start to understand each other better, albeit reluctantly at first.
For Draco himself, he may face a lot of internal conflict. His decision not to want the baby could haunt him in the long run. He might realize later that he made a mistake, but by then it could be too late. And he could also lose the respect of some characters who thought he was better than that, which would further isolate him within the fanfiction narrative.
One consequence could be that it creates a rift between Ron and Hermione. Hermione might be grateful to Lucius, which could make Ron jealous or angry. This could lead to a strain in their relationship, and they might have to work through their feelings about Lucius' interference.
Hermione herself would also develop. With the support of two former adversaries, she might gain more confidence in dealing with the pure - blood elite. She could learn to trust them and in turn, teach them things about the Muggle - born perspective. This triangular relationship could lead to all three characters growing in unexpected ways.
One consequence could be a change in the public's perception of Hermione. Some might see her as a hero for standing up against an unjust imprisonment, while others might view her actions as traitorous, especially if they believe Draco was truly guilty. This could create a divide among the wizarding community.
In the wizarding community at large, he could become an outcast. Other wizards and witches would likely look down on him, and he might find it difficult to get support or make alliances in the future. His actions could also lead to him being targeted by those who support Hermione and want justice for her.
Yes, it can be quite a popular trope in some fanfiction circles. The idea of Hermione, with her intelligence and strong will, seducing Draco, who is often seen as a complex and initially antagonistic character, creates an interesting dynamic. It allows for exploration of their characters in a different light, outside the boundaries of the original canon relationship dynamics.