One possible theme could be self - discovery. If the girl is 'shaky', she might be in a process of finding out who she really is, which is a common theme in many novels.
If 'the shaky girl novel' has elements of mystery, then 'The Girl with the Dragon Tattoo' might be somewhat alike. It has a strong female lead and a complex plot full of twists and turns. The two novels could share some common ground in terms of engaging the reader with an enigma to solve.
The origin of Kate Kane and Jacob Kane varies in different comic interpretations. Kate Kane is known as Batwoman. Her origin often involves her military background and her decision to take on a vigilante role in Gotham. Jacob Kane, her father, is also an important figure in her story. He has his own military and family - related past that intersects with Kate's journey.
The exact origin of COVID-19 is still a subject of ongoing research and debate. It's not fully clear yet, and multiple theories are being investigated.
Well, if '100 bellamy and kane fanfiction' is what you have, it might mean there are 100 different fan - created stories about Bellamy and Kane. Fanfiction often takes the existing characters and settings from a show like 'The 100' and spins new tales. Bellamy is known for his leadership and Kane for his more traditional leadership style. Fanfictions might explore how they combine their leadership skills, or their interactions with other characters in new and exciting ways. It could also be a code or something specific within a particular fanfiction community, but without further information, it's just speculation.
One key element is Kate's military experience which was cut short and led her to seek a different path in Gotham. For Jacob, it's his position in Gotham's power circles. Another element is their family bond which is tested as Kate becomes Batwoman.
Ruin would be a great character to pair with Kane. They both have strong military backgrounds and skills. Their combined combat abilities could make for some really intense and exciting scenes in a fanfiction. They could be on a mission together and use their different specialties to overcome obstacles.