Peeta would probably be very nurturing. He has a kind heart, so he'd be great at taking care of the baby's basic needs like feeding and changing diapers. Katniss, on the other hand, might be a bit more cautious. She's used to being in survival mode, so she'd be constantly on the lookout for any potential threats to the baby.
At first, they might be a bit clumsy. Peeta may accidentally get flour all over the baby while trying to bake, and Katniss might be a bit too rough when handling the baby, like she's handling a weapon. But over time, they would grow into their roles. They would support each other, with Peeta helping Katniss relax and Katniss teaching Peeta how to be more vigilant. Their love for each other and the baby would be the driving force in their adjustment.
They would become more united as they have a new life to protect. Their focus would shift from just each other to their baby, and they would work together even more closely.
The fanfiction might depict the baby as a symbol of hope for a new beginning. Katniss and Peeta could be seen trying to create a better world for their child. They would have to deal with the public eye being on them and their family. There could be heartwarming moments of them as a family, like family picnics in the meadow where they first fell in love, while also having to fend off any potential dangers to their baby.
Their lives would change in terms of their time management. With a second baby, they would have less time for themselves and more time dedicated to taking care of the child. They might also have to adjust their living space to accommodate the new family member.
She could have Katniss's dark hair and Peeta's blue eyes. Her features might be a blend of their strong and determined looks. Maybe she has Katniss's high cheekbones and Peeta's soft - looking lips.
One common theme is family. Since it's about them having a baby, it often focuses on how they build a family unit. How they protect and care for their child.
One possible scenario in the fanfiction could be that Katniss and Peeta's baby becomes a symbol of hope in the districts. The baby might grow up with unique skills inherited from its parents. For example, having Katniss's archery skills in a more developed way in the future. It could also be that the baby's existence is a threat to the Capitol, so they have to keep it hidden and protected at all costs.
Survival in a new context is also a theme. They had to survive the Hunger Games, and now they have to survive the challenges of raising a child in their post - Games world. For instance, protecting the baby from any threats that might still lurk in their society.
Katniss might become more open and less guarded. With Peeta by her side, she could start to trust more easily. Peeta, on the other hand, might become more assertive in protecting Katniss and their new family. His gentle nature could still be there, but he'd have a newfound determination.
They might have some disagreements, like how to raise the child. Katniss, who has grown up in a tough environment, might have different ideas compared to Peeta. But these differences would also help them understand each other better. They would communicate more and work through their issues together, making their relationship more solid.
The baby could be a unifying force. Just as Katniss was a symbol during the rebellion, the baby could symbolize a new beginning. People would see it as a sign of a better future, and different districts might come together to protect and support it.