He's not one to suddenly turn enthusiastic over a small response like that, but this is a markedly better atmosphere than his earlier awkward attempts at catching their attention with relics, and he does brighten.

"Good! I've guessed for a bit it's pointless warning someone like you against catching a cold, but still it can't be pleasant to sit in wet fabric." A slight pause; Lemm huffs. "Old aches can act up in the cold and the damp, sometimes. I've heard."

Maybe he'd see if they might be able to take the umbrella with them, when they opt to go out again- but the Nail's the trouble. They'll not leave without that, and don't have a spare hand for anything else.

...He was absently staring at the relic they must nearly be finished with by now, but his gaze wanders, and settles on the Nail leaning up in his shop. He looks pensive, suddenly.