One way could be through humor. For example, Amy might accidentally leave a tampon in a visible place in Sheldon's apartment and he freaks out not knowing what it is. It could create a comical scene where the other characters have to explain it to him.
It might also be used to introduce a new plotline related to women's rights or health in the TBBT fanfic world. Maybe Amy decides to start a campaign on campus about normalizing conversations about menstruation, and the other characters either support or oppose her in different ways.
Perhaps the other characters, like Penny, would be more understanding and offer Amy support. Penny could share her own experiences or just be there to comfort her. This could also be a chance for the female characters in the fanfic to bond over something that is a normal part of being a woman.
One possible plot could be Amy Rose dealing with the physical discomfort. For example, she might struggle to keep up with her usual activities like running around or fighting bad guys. She could also face some embarrassment at first if she accidentally leaks or has to deal with cramps in public. Her friends might notice her being a bit off and try to help, but not fully understand what she's going through until she explains it to them.
The plot might involve Amy Rose's search for supplies when she gets her period. In the Sonic universe, this could be an adventure in itself. She may have to venture into an unknown area to find something suitable. Along the way, she meets other female characters who help her. This not only becomes a story about her dealing with her period but also about female camaraderie and empowerment within the Sonic world.
Well, it can be different in that it focuses on a very real and relatable aspect of a female character's life that is often not explored in fanfictions. Most fanfictions in the Sonic world tend to be about battles and adventures, but this one delves into a more personal and biological experience of Amy Rose.
Sonic could be a supporting character. He might be initially clueless about what's going on with Amy Rose but tries to be supportive in his own way. He could offer to do some of her tasks for her so she can rest. Tails could also be there. He might use his intelligence to find ways to ease Amy's discomfort, like inventing a device that provides heat for her cramps.
In TBBT, Penny and Amy's relationship is full of potential for fanfiction. Penny's charm and Amy's quirkiness make them interesting characters to write about. Their friendship is a great source of inspiration. Writers can explore how they deal with conflicts within their friendship. Maybe they have a disagreement over a guy or a difference in opinion about a scientific theory. Also, their individual growth throughout the series can inspire fanfiction. For instance, as Penny becomes more career - oriented and Amy becomes more confident socially, fanfiction can show how they help each other along the way.
It could start with the girl feeling a strange sensation as the eels enter her body, and then she might struggle to adapt to this new and disturbing state.
Obviously Caroline herself is the main character. Her mother is likely to be in it as well, as mothers often play an important role in a girl's first period experience, like giving advice and support.
It could be about Caroline's initial shock and confusion when she gets her period for the first time. Maybe she's at school and has to deal with the embarrassment of not being fully prepared.
Well, it could be about Arya's confusion and discovery when she first gets her period. Maybe it shows how she copes with the physical and emotional changes, like feeling a bit scared or embarrassed at first. And how the people around her, like her mother or sister, help her understand what's going on.