About MZB: Did she not write "The House Between the Worlds" or some such book where parapsychological research was taken seriously?
Yes, The House Between the Worlds
was one of Marion's. I liked that one quite a bit.
Several more of her books -- The Touch of the Master
, the Colin & Claire trilogy (Dark Satanic
, The Inheritor
& Witch Hill
) and the closely-related Shadow's Gate tetralogy (Ghostlight
) take place in universe(s) where parapsychology is an accepted academic discipline. They may very well all take place in the same universe.