Hi Val and Jackie, I am probably the person who might be able to help you, but I would need a bit more information.
Original manuscripts like this can really only come from two sources, either Enid Blyton's own papers or a publisher. If it came from a publisher then the story would have been published, if it wasn't published it would have been returned to Enid Blyton.
I have a number of original manuscripts in our archives, both full length books and short stories. If you sent me a scan of the first page with the bit written by Enid Blyton I might be able to help a bit more, but I haven't heard of the story and if it has never been published it needs a bit more provenance. She did write short stories for numerous sources, for both magazines and books, so it is perfectly possible that this story has been published somewhere.
My email address is firstname.lastname@example.org
- I hope to hear from you.