She kissed him goodbye.
Removed the soul from his living corpse.
He couldn't feel it.
He couldn't feel anything now.
She'd tried to tell him - singing it aloud in a language that he couldn't speak - that this was the end. That he'd never survive the night.
But, he couldn't understand.
She'd had to remove the pain herself.
Pokédex entry: It speaks using a language that sounds human. Research is under way to determine what is being said.