Well, often there might be a theme of self - discovery. Amy might learn something new about herself through her interactions with the Thunderbolt. And also, the theme of heroism can be present. They could be saving the day in different situations. For example, in a world full of challenges, they rise to the occasion and become heroes. This kind of theme can make the fanfic very exciting and inspiring.
Well, I haven't really come across a particular 'amy thunderbolt fanfic' that stands out. However, you could join some relevant fan communities. People in those communities often share and discuss interesting fanfics. They might be able to point you to some great 'amy thunderbolt fanfic' works.
One common theme is self - discovery. Since Amy has this new werehog form, she often has to figure out who she is in this new state. Another theme is friendship. Her friends' reactions and support play a big role in many fanfics.
One common theme is adventure. They are always traveling to different places and times, so fanfics often focus on their exciting escapades. For example, going to unknown planets and encountering strange creatures.
Adventure themes are quite popular too. Fans like to write about Amy and Cream going on quests, exploring new places, facing challenges and villains together. It makes for exciting and engaging fanfic stories.
Love is a very common theme. Most of the time, it's about Amy's love for Sonic and Sonic's growing realization of his feelings for her. Adventure is also common. They often go on quests or face challenges together.
One common theme is friendship - turned - love. Amy and Jake often start as friends and then gradually develop deeper feelings for each other.
Another theme is competition. Given their different personalities and abilities, they can be pitted against each other in various scenarios in the fanfic, like a battle of wits or a physical fight for a valuable item.
One common theme could be justice. Since Amy is a cop, stories might revolve around her seeking justice in the face of crime. Another could be loyalty, either to her fellow officers or to the community she serves.
A less obvious but still present theme is the idea of self - discovery. Both Amy and Ty are on their own personal journeys. In fanfics, they might discover new aspects of themselves through their relationship with each other. For instance, Amy could find a new passion for teaching horse - training skills to others because of Ty's influence, and Ty could realize his hidden talent for art while spending time with Amy at the ranch.
Since I'm not familiar with specific 'amy coughs' fanfic, it's hard to say. But generally in fanfic, common themes could be relationships, personal growth, or challenges faced by the characters. Maybe in 'amy coughs' fanfic, if 'amy' is a character, it could be about her dealing with an illness (the cough) and how it affects her relationships or her journey.