[Between Sans barely being taller than human children, and the sheer variety in sizes between monsters... Hilda doesn't stand out as particularly short to Papyrus. Still, he can sympathize a little with the worried older sibling thing. And most of all with the idea of the brothers also being around, somewhere.]

That would be something. Something entirely believable.

[A little bit of wishful thinking to go around. Now that he's thinking about it, he hasn't really dealt with life without his brother around somewhere, at least a few times a day... But it's fine. He's a grown skeleton who's very cool, very capable, and more than up to the task of figuring out what's what once they're on shore.]

You wouldn't believe how much Sans gossips about me... I can't go two feet without someone knowing my name.

[This is exaggeration, oversimplification, and a misrepresentation of one of Sans's ways of helping his bro. With Papyrus's old worries about being forgettable, making sure people know of him is a kind of support. Even if it's mostly fond teasing.]