Star's friends would likely be a mix of helpful and confused. Since Star is from another dimension, her friends might not be entirely sure how to handle it. But overall, they would probably try their best to make her feel normal. For example, they could plan a girls' night in for Star and the female friends, with movies, junk food, and lots of girl talk.
Hermione would be the first to notice Ginny's discomfort. She would pull Ginny aside and offer her all the supplies she needs. She would also give her some potions to ease the pain. Luna would approach Ginny with her usual dreamy look and say something like 'Your body is just having a little moon - time celebration'. Harry would be a bit red - faced but would still be there for Ginny, like getting her a warm drink. Ron, on the other hand, would be completely clueless at first but would eventually come around and show his brotherly support.
Another aspect could be how Star's magical powers interact with this new physical change. Her emotions during this time could make her magic go a bit haywire, leading to some comical or challenging situations as she tries to control it. For example, she might accidentally turn things into strange menstrual - themed objects when she gets frustrated about her period.
Her animal friends like the frogs and squirrels would probably be very excited. They could gather little things for the baby, like soft leaves to make a comfortable nest or little shiny stones as gifts.
Her self - reliance might also change. She might realize she can't always do everything on her own when she's dealing with the physical and emotional aspects of getting her period. So she starts to rely on others a bit more, which in turn strengthens her relationships with her friends.
Edward might be a bit disappointed as he values responsibility. But he would also offer to help immediately because he cares about Bella. He might say something like 'Let me take care of this, Bella. You don't need to worry.'
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 Then she could become very sad and withdrawn.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.
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.
She should try to stay calm too. If she's not in a lesbian relationship but just having normal, affectionate friendship with her friends, she can explain that to her mom. For instance, she could say 'Mom, we're just really good friends and we like to be close to each other, it doesn't mean what you think.'