Some in the wizarding world might see it as a chance for redemption for the Death Eater. If Hermione can reform him, it could be seen as a positive thing. But most would still be very cautious and watchful, fearing that it's all a ruse by the Death Eaters to cause more chaos.
Over time, if she couldn't immediately escape, Hermione would try to influence the Death Eater. She would use her knowledge and strong moral compass to show him the error of his ways. She might start by having debates with him about the Dark Arts and the ideology of the Death Eaters, hoping to make him see the light.
She could also try to reason with the Death Eater. Hermione is known for her intelligence and ability to think on her feet. She might try to appeal to any sense of humanity the Death Eater might have, reminding him of the consequences of following Voldemort's evil path.
Hermione would likely try to outwit them. She has a sharp mind. She might use her knowledge of magic, both dark and light, to find ways to counter the Death Eaters. For example, she could use spells that they wouldn't expect or find loopholes in their dark magic.
The wizarding world would be in chaos. Harry has been seen as the 'Chosen One' to defeat Voldemort. If he becomes a Death Eater, the hope that the wizarding world has placed in him would be shattered. People would lose faith in Dumbledore's judgment for believing in Harry all this time. The Order of the Phoenix would be severely demoralized as they have been fighting for Harry's cause.
The wizarding community would likely be in shock. Hermione is known for her association with Harry and Ron, and for her fight against the dark side. Marrying Rowle, who might be associated with dark magic, would make many question her motives. Some might think she's gone to the dark side herself, while others might suspect there's more to the story than meets the eye.
She might react with caution at first. Given that Death Eaters are known for their cruelty, Hermione would be smart to be on her guard. She would likely start by gathering information about the escaped Death Eater, like his known abilities and any possible weaknesses.
It could make her more empathetic towards the idea that not all Death Eaters might be completely evil. The fanfiction might show some grey areas in their characters.
Some would be angry. They'd feel betrayed, especially those who see Harry as a symbol of hope. They might think that Harry and Hermione are cowards for running away from the fight. However, others could understand. They might think that Harry and Hermione have a greater plan in mind and are leaving for the long - term good of the wizarding world.
Well, some in the wizarding world might be skeptical. Since Hermione was always so dedicated to her work and studies, they might wonder if she's really ready for motherhood. However, those who know her well, like her Hogwarts professors, would likely support her. They might offer their help and advice. And the magical community at large could see it as a sign of hope, a new generation being born into the wizarding world.
Well, there would be a huge uproar. Pure - blood supremacists would likely use this as an example of how the wizarding world was going to the dogs. The Hogwarts faculty would be divided. Those who knew Snape well might suspect there was more to the story, but those who only knew his past would condemn him. Hermione herself would face a great deal of ostracism. She might have to leave her job at the Ministry if the public outcry was too much. And her relationship with her friends could be severely strained as they struggle to come to terms with this unexpected and controversial situation.