She may not fully grasp the extent of the gesture he is giving her, but she's got some idea based on her own experiences as a soldier. That she could move around him without him cracking open an eye to watch her, that she could move the blankets beneath him without him asking her what she's doing...

She carefully leans in and brushes her lips to his cheek, murmuring a quiet wish for pleasant dreams in her native tongue against the cut of his jaw, and then curls up against him and closes her eyes.