It serves her right.
If she had approached a Wiccan coven with such a request, they would have reminded her that whatever we do with Magick -- good or ill -- comes back to us sevenfold. And then they would put word out so that she would not be welcome in any other local Pagan spaces.
The Asatru wouldn’t be so polite.
Looks like she was racistly thinking that Voodoo is so depraved that it would allow her to harm one of their own. I hope she learned her lesson and will do better next time around.