Her other friends, like Ginny or Neville, would also rally around her. Ginny might give her some tough - love advice, telling her to pull herself together while also showing her empathy. Neville would likely offer her some plants he's been growing in the Hogwarts greenhouse, as he believes in the healing power of nature. Together, they'd all form a support system for Hermione during her difficult time.
Harry would probably be very concerned and protective. He's been through a lot himself, and he'd want to be there for Hermione. He might try to comfort her by just sitting with her quietly, sharing his own experiences of tough times to let her know she's not alone.
She might initially be in shock. Hermione is used to relying on her friends, so the betrayal would be a huge blow. She could then become angry and start to isolate herself. In some fanfictions, she might try to figure out why they did it on her own, using her intelligence to uncover the truth.
Harry would probably be very supportive. He knows what it's like to grow up without parents, and he would see Hermione's decision as a very kind and noble one. He might offer to help in any way he can, like teaching the child some of his own skills in magic or defense against the dark arts.
Harry and Ron would likely be very shocked and concerned. They know Fenrir is a dangerous werewolf, and they might not understand how Hermione got into this situation. They would probably try to persuade Hermione to leave Fenrir at first.
Hermione's friends from Hogwarts like Harry and Ron might be a bit shocked at first. Ron, in particular, might have some mixed feelings as he has had a bit of a competitive streak with Viktor in the past. But eventually, they would come around and support her. Viktor's friends from Durmstrang would probably be more accepting as they might respect his choice more blindly. They could be excited for him and offer their own unique magical gifts or knowledge for the upcoming baby.
The Weasley family would be divided. Molly would be heartbroken as she always saw Hermione as part of the family. Some of the Weasley siblings might side with Ron out of loyalty, while others might understand Hermione's point of view. Ginny, for example, might be more empathetic towards Hermione as a fellow woman who has her own ambitions.
Harry and Ron would probably be very worried. They'd rush to her side immediately. Harry might use his skills to try and find a way to heal her quickly, while Ron would be freaking out a bit but also trying to be helpful.
She might be initially shocked. But being Hermione, she would quickly gather her wits and start planning. She could use her vast knowledge of magic to find her way or to signal her friends.
Hermione could also get angry. She's a strong - willed character. So, instead of just accepting the situation quietly, she might confront her friends and demand to know why they are ignoring her. This could lead to a big argument or a revelation about what's really going on.
She might withdraw. Hermione could become quiet and start spending more time alone, like going to the library even more often than usual. This is her way of protecting herself from further hurt.
Harry would likely be furious. He'd immediately start planning to rescue Hermione. He might try to gather evidence of the dark magic used to enslave her and take it to the teachers. Ron, on the other hand, would be impulsive. He'd probably want to storm into the Slytherin common room right away to free Hermione, without much of a plan.