I have a copy of this as well as another of her novels. When my mother studied in the early sixties this book was still passed around as good reading. The supposed spirit connection is entirely the result of the forward to 'angels and women'. Mrs. Smith did not write the forward, in fact she had died years before and was never aware that her 'Seola' was republished. in my opinion her books are simply fanciful nineteenth century fiction... Nothing more. no more spirit influenced than Star Trek ,Star Wars , star gate, or any science fiction.
The question remains as to who wrote that forward? My vote is for Clayton Woodworth, who of all the early Bible Students was probably the goofiest.