( Came in the inbox of @neonthesprite, an aesthetic blog for my sprites; did I answer this one? I don’t remember if I did but it was still in the inbox so I’m cleaning up now )
I think they’d probably all be a little weirded out by it. The lyrics are a little strange, alarming even for someone who doesn’t understand that it’s not really something that humans do.
The Wellwood sprites tend to hum or vocalize tunes that they make up on the spot when they sing to their nestlings, so a lullaby with actual lyrics is rare. Not unheard of, but not common, either.