This is a short fix on what I think Pantalaimon was thinking when Lyra left him on the dock to go to the world of the dead.
Pan watched as his beloved Lyra disappeared into the haze alone--without him. Every cell in his body rang out in pain as she drifted further and further away. His brain was telling him to change and fly to her, but his heart stopped him. He stayed put, he knew he had to be strong. Not for himself but for Lyra. He knew she was doing something beyond words, what she was planning to do was fantasying, extraordinary, breathtaking, but also dangerous and possibly deadly. Could you go to the world of the dead with out dying? Pan didn't know but if anybody could it was Lyra and Will. If for them to succeed meant him sitting with every cell in his body crying out in anguish, then he would do it. He would sit for eternity in pain on this rotting gray dock. As long as Lyra came back, as long as she was ok, because….. He was her and she was him. And by her side was where he belonged. It was were he was born and were he vowed to die.