Concern, first. They don’t really know what to expect from such a pale person, considering no wood sprite is quite as light-skinned as little Sam. When he turns pink/red, they might worry he’s sick until he explains it to them, and even then they’ll fret. The sun is supposed to give life, not burn them! That said, they could get burned themselves if they’re not careful, it’s just not as easy for them. So they’d know some herbal remedies to soothe him if necessary.