@Sal2lee - Found Dion Fortune’s little book, Psychic Self-Defence (first published 1930) in my bookshelf I can recommend. I haven’t read it in years and see listed a chapter titled, “The Pathology of Non-Human contacts.” She writes, “…they are aliens in a strange land when incarnated in human form” and “have an infinite capacity for inflicting hurt on those who love them…like a child pulling flies to pieces out of idleness, not realising with it is doing…For them to submit to our standards is to deny their deepest instincts.”
And now, I think, I will reread the book.