It could be her existing partner from the original story. For example, if it's a story where she's in a relationship with Edward, then he would be the likely father.
Another possibility is that it could be a situation where there was a one - time encounter with an old acquaintance or a mysterious stranger, which then leads to the pregnancy. This would add a lot of drama and mystery to the fanfiction.
Maybe in an alternate version of the fanfiction, there could be a new character who she has fallen in love with and he is the father. This new character could bring a whole new dynamic to the story and Bella's life.
It could be one of her close friends from the guild. Maybe Jellal, considering their complex relationship in the original story. There's already a lot of history between them, and this could be a new development in their relationship.
It could be a long - time boyfriend that we haven't known much about in the original story. Maybe he's a character who was in the background but now becomes central to the plot.
There's also a chance that it could be a god in disguise. Gods have been known to have relationships with mortals and demigods. So perhaps a god took on a human form and had a relationship with Thalia, resulting in the pregnancy.
In this fanfiction, it could be that Bella's second pregnancy is a complete surprise. She was not planning on having another child so soon. She then has to adjust her life plans, like her career aspirations. Meanwhile, her relationship with her partner might face some new challenges and also grow stronger as they navigate through this unexpected journey together.
It could be his long - time partner. They might have had a very loving relationship that led to this situation.
Perhaps it's a mysterious stranger she met at a party. They shared a brief moment together, and now she's pregnant. Or it could be an old acquaintance who has always had feelings for her and took advantage of a vulnerable moment.
Maybe it's a new character introduced specifically for the fanfiction. This new character could be from a different faction or group, and their relationship with Makima could be full of intrigue and mystery. The pregnancy could be a result of some sort of strategic alliance or a passionate encounter between them.
It could be one of her close friends in the story. Maybe someone she has had a long - standing relationship with and the pregnancy was an unexpected but not entirely unwelcome result of their relationship.
Another option could be a mysterious figure. For example, a character from another dimension or a new character introduced specifically for this plot twist. This could add an element of mystery and intrigue to the story.
It could be a long - time love interest like Stefan. Their relationship has had its ups and downs, and a pregnancy could add a whole new layer of complexity to their story.