Anti-fetch spell?

A friend of mine is having a problem with a fetch in her hometown. A pretty nasty one, by the sound of it, it's hurting people physically. (A shadow-formed fetch.) She's looking for "a formal counter-spell" against fetches, because she wants to send the fetch back to its maker, hurting only the maker and not anyone (human or animal) around the thing's maker to get hurt by it. So if anyone knows one, let me know in a comment, okay? Thanks in advance!

Edited to add: If you don't have what I'm looking for, please just don't comment at all. What my friend wants is a formal spell. I am a chaote among other things, so if it could be done without a formal spell, I would have done it for her. Also, I have no desire for off-topic conversations.