I don't think so David. She probably prefers earthworms because she is an eastern garter...easterns live primarily on earthworms in the wild. My easterns love them...but they learned to love pinkies and fish too in time. Try giving your snake a warm soak. Put her in some warm water for a couple of minutes...warm but not too hot for her...you can put her in a little bowl and just make sure she doesn't jump out...let her swim around a little...see if it helps her skin at all.