Esper Denvers turned out to be the woman who was carrying Kellen, and the woman leading the team inside. No, they weren't sisters, they were married, and when Kellen and the woman who had carried him were landing inside of the building, the woman in charge was explaining that to the crew there.
Kellen and her wife just happened to arrive at the perfect time. Instead of being strange, Kellen nodded, gave a thumbs up, and asked no follow up questions. He was glad that the two married women were working together.
Why the fuck would it matter to him? As long as they were good at their jobs, he didn't care.
