Istredd's far-too accustomed at cleaning up Lucifer's messes, purposefully made or otherwise, that it likely should be a sign of... something. An omen to come, maybe.

"The trades they were making," he says. "Currency that none of the other locals were using or bits only the person themselves could give. Some of it wasn't weird but I caught one vendor trying to get hair from Rhy for a piece of jewelry."

It's entirely possible that it didn't mean anything, but...

I don't like willfully giving over something someone could use as tracking spell components.