Percy knows exactly what she thought and he gives her another tender kiss, attempting to offer some reassurance. They aren't dead. They are very much alive.

"I was watching Vax walk away," he says quietly, forehead pressed gently against Vex's. "For good."

He knows Vax and Gilmore remember time past that, but Percy doesn't. That is the last thing he saw before surfacing in a freezing ocean: Vax'ildan's back and a trail of snowdrops. He strokes Vex's cheek, allowing himself to take comfort in her presence. She remembers him, remembers loving him, and that is all that matters. Everything else he can handle as it comes.