Some of her more practical friends might be worried about how Mal will handle everything. They could be concerned about her safety during the pregnancy and whether she's ready to be a mother, so they would offer all kinds of advice and support, from finding a good doctor to helping her with her daily tasks.
Her friends might be initially shocked. But then they would probably rally around her. Some friends could be super excited and start planning for the baby's arrival, like getting baby clothes and toys.
One possible plot twist could be that the baby has some sort of special power. Maybe it's a power that is not known in their world and it causes all kinds of chaos and confusion. People might be scared or intrigued by the baby.
Their friends from the Isle of the Lost might be initially shocked but then very supportive. They would probably see the baby as a new hope or a symbol of a different future. For example, Uma might be hesitant at first but then realize that the baby could be a bridge between different factions.
She could also be quite matter - of - fact about it. If she's with close friends or family, she might just laugh it off and say she's really hungry and needs to find something to eat. Maybe she'll even joke about it and say her tummy has a mind of its own.
She might be initially shocked. After all, she would have trusted her friends a great deal. Then she could become very sad and withdrawn. She might throw herself into her studies even more as a way to cope, trying to distract herself from the pain of losing her friends.
After the initial reactions, Hermione may choose to isolate herself for a while to figure things out. She would use this time to study and research, trying to find a solution to the problem with her friends. She might also look for new allies or resources within the fanfiction world to help her deal with the situation.
She might be initially shocked and hurt. Hermione is a character who values her friendships deeply, so their sudden departure would be a big blow. She could spend some time in denial, not believing that they would actually leave her.
Some of her friends might be overjoyed and immediately start planning baby showers and buying cute baby gifts.
Her friends will probably be in a panic at first. They'll start looking everywhere for her. Maybe they'll check all the places she usually goes to.
Jay could be a bit more awkward at first, but he'd be very protective. He'd offer to train the baby in self - defense when it's old enough, in his own humorous way. And he'd be there to help Ben out with any tasks that need a bit of muscle, like setting up the nursery or moving heavy furniture.
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.