[ He's surprised that she offers to help, and it gets him to laugh a little ]

Ah, and here I thought it was an apology... [ Though it's said playfully and lightly, at least. To actually answer, he nods. ] Perhaps. I will need no small amount of material to make the thatch itself, and any assistance in collecting it would certainly expedite the process. It needs to be straw, reeds, or the like—a long, thin, sturdy plant, essentially.