How did tris save peters life while escaping amity compound in the book insurgent?

In "Insurgent," Tris saves Peter's life during their escape from the Amity compound by choosing to help him despite their tumultuous past. When Peter is injured and unable to escape on his own, Tris makes a split-second decision to pull him onto the train, prioritizing survival over her personal feelings. This act of compassion highlights her complex character and the themes of sacrifice and morality in the face of danger.