I'm not sure if there is a specific fanfic with this exact combination. You could try searching on major fanfic websites like Archive of Our Own or FanFiction.net.
Maybe a plot where Shego loses her powers and Kim Possible has to help her get them back. In the process, they explore Shego's past and discover some secrets that change their relationship. This could involve some emotional scenes and also some action scenes as they face obstacles along the way.
Well, it could be about Kim Possible and Shego having to team up against a new common enemy, with Kim having some sort of muscle - futa transformation that gives her new powers to face the threat.
For Kim Possible, her determination and can - do attitude can be further explored. Maybe she faces a situation where her usual methods don't work, and she has to learn to adapt, which shows her growth. With Shego, her sarcastic and tough exterior could be peeled back to show a more vulnerable side. For example, when she is in a really tough situation and has to rely on Kim.
One great 'Kim Possible x Shego' fanfiction is 'The Unlikely Alliance'. It explores a scenario where Kim and Shego have to team up against a new common enemy. The story does a great job of delving into their complex relationship, showing how their initial animosity gradually gives way to a grudging respect.
In a Shego - kidnaps - Kim - Possible fanfiction, the plot could be filled with high - stakes action. Shego might have some devious plan behind the kidnapping, perhaps related to a powerful artifact Kim was about to retrieve. Kim, being the resourceful hero, would surely find ways to outwit Shego even in captivity. This could lead to an exciting cat - and - mouse game within the story.
Another factor is the rich universe of Kim Possible. There are so many possibilities for stories within this world. When you combine Kim and Shego, you get a unique dynamic. Fans are drawn to seeing how they would interact in different situations that may not have been explored in the original show. For example, what if they were stranded on an island together? The fanfiction can take these ideas and run with them.
Their relationship would become much more complex. They would have to put aside their differences and work together for the sake of the baby. Instead of being just enemies, they would become reluctant partners in parenting.
One of the main themes is the relationship between good and evil. Kim represents good and Shego represents evil, and the fanfics often explore how their interactions can blur the lines between the two. For example, in some stories, Shego might show a softer side that makes Kim question her own view of villains.
Shego might kidnap Kim Possible in fanfiction because of jealousy. Maybe Kim always gets the credit and Shego wants to show that she's just as capable. So, she kidnaps Kim to prove a point.