It could be her family. Her parents, if they are understanding, might step in to help with the baby so that Tris can still focus on her studies to some extent. Or perhaps an older sibling who has been through similar situations or is just very caring.
In the fanfiction, the pregnancy could be a catalyst for them to re - evaluate their relationship. They might realize how much they truly mean to each other. Four could be more open about his feelings, and Tris could let her guard down more. They could also start planning for their family, which includes discussing things like where they will live, how they will raise the child, and what values they want to instill. This would involve a lot of heart - to - heart conversations and a deepening of their emotional connection.
Well, perhaps in this fanfiction, Shield Tris is being misinformed. She might believe that Harry is in possession of something extremely valuable, like a powerful magical artifact. So, in her mind, kidnapping Harry is the only way to get that item. It could also be that she's part of a group that has a radical ideology and they see Harry as a threat to their plans, so they order her to kidnap him.
In this type of fanfiction, it could be a really interesting scenario. Four might be nervous when meeting Tris' parents. Maybe he'd try to impress them with his skills and strength. He could be worried about living up to their expectations for Tris' partner.
Eric might also use his position of authority. If he's in a position of power within the story's setting, he could simply order Peter to stop. For example, if Peter is violating some rules of the group or faction they belong to, Eric could threaten him with punishment if he doesn't let Tris go.
Trust is a big theme. Since they start off on rather rocky terms, fanfictions often focus on how they build or break trust. Also, the theme of self - discovery is common. As they interact more, both Peter and Tris learn more about themselves and their capabilities.
One common theme is the exploration of their relationship dynamics. Since they have a complex relationship in the original work, fanfictions often dig deeper into how they interact, whether it's as friends, rivals or something more.
The relationship between Four and Tris is full of drama and depth. A 'four and tris fanfic' is appealing because it can expand on their relationship, show different sides of their personalities. For example, a fanfic might explore Four's more vulnerable side when he's only with Tris.