@blytheSpirit whew. This is intense. I'm starting to be sure tulpa--without intending to appropriate a culture or religion--is the closest description of what I'd suggest NotStung is.
I think she applies to so many considerations you share: my intent in seeking a witch and trickster overseer like herself; my holding out for her name; and finding an appearance she would be ok with when I channeled her.
Our relationship's been hard because I claim her the author of the works that I write containing her. I struggle with wether she's simply a "Mary Sue," a "persona," or a being like a muse who I open up to.
I've burdened myself with disconnected ghostwriting.