Hi Zen Rabbit, CaroleW & Margp,
Thanks for the kind offer, Zen Rabbit, but I have discovered that there is a £25 fee for searching the Longton Cemetery burials. As this is not my personal genealogy, I shall not be pursuing that line of enquiry.
In reply to CaroleW, one version of the story says that Fanny had a heart attack, but I suspect that this is mere embroidery of the original version.
In reply to Margp, the story is based on Longton and Fanny rushed home (presumably on foot). The Worcester RD death registration is a non-starter in my view. Anyway, Fanny would have been 39 in October 1905, not 41. A difference of two years for a woman approaching 40 would normally be thought significant if the age was being raised, rather than lowered !
My theory is that Fanny the elder did not die at the stated time, but left her husband and the whole episode of the seance was a pre-arranged cover-up to avoid scandal and provide "evidence" to Fanny the younger, of her mother's "death".
This is probably the last post, so thank you all for your contributions.