[Ling nodded, noticing the way that the other man seemed to be listening carefully to his surroundings. It was a little unusual. Perhaps he had]

That's what I was thinking. Grandfather here had quite a fall, and there was actually a grandmother in the building too. I need to go back for her. Would you mind waiting for us? They asked not to be separated.

[Ling turns and addresses the elderly man, speaking politely]

Would that be okay, sir? If I ask this man to help you stand, while I get your wife?