[Spongebob seems the tiniest bit surprised to see Peregrine approach him, but he smiles all the same when she sits down next to him.]

Me too, I'm really sad that I won't be able to play any music for awhile... But I guess it's my punishment for doing something that stupid yesterday, huh?

[He laughs, before it awkwardly trails off. He sits there in silence, for a moment]

Oh Neptune, I'm sorry I never got to thank you for mending my arm yesterday! That was really nice of you to do even though you were...

["Upset with him"? "Scared"? "Dealing with your own thing"? He's not exactly sure how to describe Per's outburst yesterday but she should probably quickly guess what he was talking about.]