Merlin & Diana
No one else would be able to understand them, but that hardly mattered to her. The chance to speak in her native tongue was not one she was likely to pass up, even for a brief time. Diana would most certainly seek Merlin out later on.
"I see. That is honorable of you. I know of many spellcasters who would not think twice to risk the lives of all who inhabit this place, if it were to mean their own freedom." She did know a handful of less destructive sorcerers, but most were not of the selfless type.