The Last Of Us 2: 11 Perfect Theories That'll Blow Your Mind

Although the original Last of Us established that Anna was friendly with the Fireflies' leader Marlene, it made it clear that she wasn't actually part of the organisation itself.

While most players assumed this was because her ideology didn't line up with that of the group's, her disengagement from the rebels could instead have been because she was being hunted by the cult seen in the trailer.

Knowing she's pregnant but not wanting to put the rest of the Fireflies in danger, Anna could have gone on her own to spend her term trying to lay low, constantly looking over her shoulder while being pursued by the cult members.

Expanding on this idea further, fan theories have argued that part of the story could allow players to play as the character, experiencing the ordeal she had to endure to keep one step ahead of the group chasing her to make sure Ellie could be born.