[Oh, so in the hospital morgue, he thinks. He's grateful they're going to be with a trusted friend, though from the picture Frisk showed him, he's not sure what age Sans is supposed to be.]

That's good - he's fortunate to have friends here to help him, and I'm glad you didn't lose him, after all.

...Be careful in there, all right? It's dark, and there will be less room to run if you must.