* Serves as a connection between the sisters: Sofía is a shared pet, a source of comfort and common ground for the sisters, especially amidst the tension and upheaval caused by their family's political situation. Their shared care for the dog offers a moment of normalcy and togetherness.
* Represents innocence and vulnerability: Sofía's playful nature and dependence on the family contrast with the harsh realities of the political climate and the sisters' fears. Her vulnerability mirrors the sisters' own precarious position.
* Acts as a silent witness: Sofía observes the family's anxieties, the arguments, and the preparations for their departure. Her presence subtly underscores the emotional weight of their circumstances. While she doesn't understand the political implications, she senses the emotional turmoil.
* Provides a sense of continuity and hope: Taking Sofía with them on their escape signifies the sisters' desire to carry a piece of their old life and hope for a better future. She represents a connection to their past and a source of stability amidst the chaos.
In short, Sofía doesn't perform heroic acts. Her impact is more about her *presence* and what that presence implies about the emotional landscape of the story. She's a symbol, a quiet observer, and a source of comfort within a difficult situation.