Another way is to show the magical energy of the curse. There could be red or blackish tendrils of magic surrounding Hermione, constricting her and causing her pain. This would not only show the physical aspect but also the magical nature of the curse in the fanfiction.
It could also be shown through Hermione's facial expressions. The animator might focus on her eyes, showing the extreme pain and fear. And the background could be darkened or have some sort of chaotic elements to enhance the mood.
One possibility is that in the fanfiction, the use of the Cruciatus Curse on Hermione could be a central plot point for her character development. Maybe she endures it and it makes her stronger, more determined to fight against dark forces.
Show the physical and mental toll it takes on the victim. For example, describe how the victim's body contorts painfully and their mind is filled with unbearable agony. Maybe the victim has nightmares about the curse long after it has been used on them.
A fanfiction might explore the backstory of Bellatrix's use of the Cruciatus Curse. Perhaps she was first introduced to it as a young witch at Hogwarts by some dark wizarding group. She practiced it on small animals, which led to her getting in trouble. But this early experience with the curse made her more interested in the Dark Arts, and she continued to perfect her use of Crucio as she grew older and became a Death Eater.
In a fanfiction, the plot could revolve around Bellatrix misusing the Cruciatus Curse and getting in trouble with Voldemort. She uses it on one of Voldemort's favored servants by mistake. Voldemort then has to decide whether to punish Bellatrix severely or let her off with a warning, while Bellatrix tries to plead her case and shift the blame onto others.
In some fanfictions, Hermione might suffer from the after - effects of a powerful spell. For example, she could have memory loss or confusion. Sometimes, if she's been in a battle, she may experience physical pain and weakness for an extended period.
Fanfiction authors often show Hermione's suffering through her interactions. If she's suffering from emotional after - effects, she might be short - tempered with her friends or withdraw from social situations. They also might use her internal monologue to let readers know about her pain and confusion. For instance, she could be constantly thinking about how she can't seem to get over a certain event and it's affecting her daily life.
Some fanfictions may also use this plot point to show the contrast between the magical world's view on such a situation and the more human, emotional side. The magical remedies might be explored in relation to dealing with the physical and emotional aftermath of a miscarriage, while at the same time, the raw human emotions of the characters take center stage.
The curse is often shown as a dark force that brings misfortune and chaos to the family. It might manifest in strange events or changes in their lives.
In many fanfictions, Hermione's relationship with her dad can be quite heartwarming. Some portray her dad as being very proud of her academic achievements at Hogwarts. He might be shown as a bit bewildered by the magic world but still fully supportive of Hermione. For example, in some stories, he attends events at Hogwarts and beams with pride when Hermione is recognized for her intelligence and bravery.
Often, in these fanfictions, their relationship is full of challenges. Their different backgrounds - Hermione being a Muggle - born and Draco from a pure - blood family - cause friction. However, their love overcomes these obstacles. Hermione might help Draco to better understand the value of equality in the wizarding world, and in turn, Draco can introduce Hermione to some of the more traditional aspects of wizarding society in a new light.