Maybe in the fanfiction, baby Diana gets kidnapped by a powerful Wesen who wants to use her powers for evil. Nick and Adalind team up with some unlikely allies, like a reformed Wesen criminal. They embark on a dangerous rescue mission, facing numerous challenges and traps along the way. During this time, they also learn more about each other's pasts and grow closer as a couple.
A fanfiction might tell the story of how Nick, Adalind and baby Diana move to a new town. There, they try to start a new life. However, the town has its own secrets and hidden Wesen communities. Nick has to establish himself as a Grimm in a new area while also protecting his family. Adalind gets involved in the local Wesen politics to ensure Diana's safety and their family's place in the community.
A fanfiction could focus on baby Diana's growth. Nick and Adalind are constantly amazed by how fast she is developing. Diana seems to have an uncanny ability to sense danger before it arrives. Nick starts training her in self - defense at a very young age, with Adalind being a bit hesitant at first but then realizing it's necessary for their unique family situation.
In this type of fanfiction, perhaps Nick and Adalind decide to start anew in a different place away from all the chaos of the Grimm - filled city. They build a home together, and Adalind starts to teach Nick more about the deeper secrets of the Wesen world that she has known for so long. Their marriage could be a symbol of unity between two different worlds. However, they may also face opposition from some traditionalists in both the Grimm and Wesen communities who don't believe in their union.
The relationship between Nick and Adalind in relation to their baby in fanfiction can be quite complex. There could be stories where they struggle to co - parent due to their different natures. Nick, being a Grimm, and Adalind, a Hexenbiest, might have different ideas about how to raise the child. However, in many fanfictions, they also find common ground and work together for the sake of their baby.
One possible plot could be that after years of a tumultuous relationship filled with mistrust and power struggles, Nick and Adalind finally realize their true feelings for each other. They decide to get married in a small, private ceremony surrounded by their closest friends and family. However, their past foes try to disrupt the wedding, but they overcome all the obstacles together and start a new chapter in their lives.
The fanfiction could focus on the reactions of their friends and family. Nick's friends might be worried about how a half - Grimm, half - whatever - Adalind - is child would turn out. And Adalind's side might have their own issues. There could be a lot of drama around the pregnancy, like false alarms, or threats that seem to target the baby specifically. And all the while, Nick and Adalind are trying to figure out their new roles as parents and strengthen their relationship in the face of all these difficulties.
One possibility is that after many adventures and overcoming numerous obstacles together, Nick realizes he can't live without Adalind. He plans a grand and romantic gesture, perhaps in a place that holds special meaning for them. He tells her how she has changed his life and how he wants to build a future with her, and then pops the question.
They may also struggle with preparing for the baby's future. They need to think about things like education in a world where the baby will be half - Grimm and half - Wesen. Do they raise the baby in the human world or among the Wesen? These are all interesting plot points for a fanfiction.
Nick and Adalind's relationship in such a fanfiction could be full of growth. Since they are married, they would be more open with each other. Adalind could finally feel secure in her relationship with Nick. She might share all her secrets about the Wesen world with him without hesitation. Nick, on the other hand, would be more protective of Adalind. They would start to plan their future together, whether it's about building a new community that is more inclusive of both Grimm and Wesen or just living a quiet life away from all the drama. Their relationship would be a journey of discovery, learning about each other's true selves and loving each other despite their differences.
Family dynamics is also a big theme. Nick and Adalind's relationship is already complex, and adding a baby to the mix makes it even more so. There can be stories about how they include or exclude other family members (like Monroe and Rosalee) in the baby's life, and how they handle the differences in their parenting styles.
They would become more committed to each other. Their relationship would likely shift from a more tentative or even adversarial one in some cases to a more unified front. They would support each other more openly.