Since the First Atlantis Reconnaissance Team changed the nanite base code from the Central data core on Asuras, some of them were able to take a different persona at will. That particular one chose to take the appearance of Jennifer Keller. She was part of what was left of Niam's faction and decided to leave Asuras, steal a Zero Point Module and built a copy of Atlantis, and manufacture nanite-based copies of Sheppard's team, to learn how to ascend, because her team wanted to find something called a "soul".