Another plot could involve the Darkling's reaction. He might be conflicted between his dark desires and the newfound sense of responsibility towards Alina and the unborn child. He could try to use the pregnancy to his advantage in some power - play, or he might actually start to develop real emotions for Alina because of it.
In this fanfiction, the baby could have a special connection to the Sun Summoner power that Alina has. As it grows, it starts to show signs of being able to manipulate light in new and unexpected ways. This draws the attention of various groups, both good and bad. Alina then has to protect the baby while also trying to figure out how to harness its powers for the greater good. She might face challenges from those who want to use the baby's powers for their own evil purposes, and she has to rely on her friends and her own strength to keep the baby safe.
A plot could be centered around an alternate reality where Alina and the Darkling meet in a different context, like in a foreign land away from Ravka. They start as strangers, not knowing each other's identities, and gradually form a bond that is tested when their true selves are revealed.
Well, it could make them more connected. The pregnancy is a big thing that ties them together in a very physical and emotional way. They might start to see each other in a new light.
I would recommend 'Shadows of the Heart'. In this fanfiction, the story takes a different turn from the original. It explores what could have happened if Alina had made different choices regarding the Darkling. It's full of interesting plot twists and great character development.
Mal could be a great addition. His relationship with Alina adds an interesting dynamic. He could be jealous of the Darkling's closeness to Alina and cause some tension. Also, Genya. Her skills as a Tailor and her own experiences in the Ravkan court can bring in more political intrigue and a different perspective on the relationship between Alina and the Darkling.
You could also create an OC who is a spy sent to infiltrate the Darkling's inner circle. The OC has to balance their mission with their growing feelings for the Darkling, which makes for a complex and engaging story.
Well, 'Shadowed Hearts' is a really good 'darkling x alina fanfiction'. It's set in an alternate universe where they meet under different circumstances. The story is full of tension and their relationship is explored in a very nuanced way. 'Eternal Darkness' is also worth checking out. It plays with the idea of the Darkling's immortality and how it affects his relationship with Alina. And don't forget about 'The Lost Love' which is a heart - wrenching take on their relationship.
You can find 'Darkling and Alina Fanfiction' on websites like Archive of Our Own (AO3). It has a vast collection of fanfictions for various fandoms, including this one. Just search for the relevant tags and you'll be presented with numerous options.
One common theme is the power struggle. Alina has her own power, and the Darkling has his, and their relationship is often shaped by who has more power at different times. Another theme is redemption. Some fanfics explore whether the Darkling can be redeemed in Alina's eyes or in a more general sense.
One plot idea could be that Alina discovers she has a special power that can either save or doom Dracula. For example, she might be able to control his vampiric urges. Another could be that Dracula, despite being a dark prince, falls deeply in love with Alina and has to choose between his dark nature and her. Maybe there's a prophecy that links them together in some way, like they are the only ones who can stop an ancient evil from rising.