Ian was exhausted, it had been years since he had forced his body to go beyond its limit, and he realized that he was out of shape for someone who could encounter any situation at any time. What bothered him most was not that he was tired, it was that Mina was keeping pace with him.
As far as Ian knew, the girl had not been trained in anything, yet somehow, she managed to keep her feet moving despite the cold settling in over them like an icy blanket. He distracted himself by watching her walk. He wondered how Mina built her endurance, and how much stronger, or even smarter she could have been if she had the proper training, or even the proper nutrition growing up.
When they had been drugged, Ian had not asked Mina many things about how she grew up. He did ask about her life and family, but she had only mentioned good things. It was through her conversations with other people that Ian realized that Mina's life was not as happy as she remembered it to be.