Usually if they have mites, the won't eat because of the added stress! She may just like the running water! I have used Nix in the past and it worked great! Mix one bottle of Nix with 4 L of water. Spray the snake and the enclosure and leave it! In a week do it again to make sure you got them all! Treating her just in case will not hurt her! If it was me though, I would just keep an eye on her! It's always nice to see another Canadian on here!!!